All the winners of the Great Indian Derby in the past 60 years have

Question

All the winners of the Great Indian Derby in the past 60 years have been horses that have been in the racing circuit for at least two years. While nobody knows for sure what the correlation between the two is, it remains beyond doubt that the winner of the Great Indian Derby will always be a horse that has been competing in races for at least two years.

Which of the following can be inferred from the above statements?

(A) If a horse has been competing in races for two years or more, it will definitely win the Great Indian Derby. 
(B) The Great Indian Derby is more competitive than other horse races in the country. 
(C) The experience that comes as part of being active in the racing circuit for at least two years plays a valuable role in making a horse victorious in the Great Indian Derby. 
(D) It is possible, on the off chance, for a horse to win the Great Indian Derby even if it has not been active in the racing circuit for at least two years. 
(E) If a horse has not been part of the racing circuit for at least two years, it will not win the Great Indian Derby.

saukrit · Accepted Answer

Indeed a very important question to understand the  Conditional reasoning . 
Before we understand this question it is important to understand how conditional reasoning and its contrapositive works

Example: 
If I study then I will Pass the exam
  If A then B
  
For this conditional reasoning only its contrapositive is true
i.e. If   Not B   then   Not A   ==> If I will not pass the Exam then i did not study   (TRUE)  
 
 But below conditions will not be true 
 
if Not A then Not B ==> If i did not study then i will not pass the exam   (Not True)  
If A then Not B ==> If i study then I will not pass the exam    (Not True)  
If not A then B ==> If I did not study I will pass the exam    (Not True)

Now coming to our sentence.
The conclusion says:  Winner of the Great Indian Derby  will always be  a horse that has been competing in races for at least two years .
This is of the FormIf  -----------------A-------------------------  then  --------------------B---------------------

As discussed above, The only statement that will be true is:  If Not B then A
  i.e.   If a horse does not compete in race for at least 2 years  then  It will not be the winner of Great Indian Derby

Only option that matches this is E, Hence it is the only correct answer.

But let us also find out why the rest of the options are wrong:  
(A) If a horse has been competing in races for two years or more, it will definitely win the Great Indian Derby.   If B then A   (not necessarily true)
(B) The Great Indian Derby is more competitive than other horse races in the country.   Irrelevant and out of scope  
(C) The experience that comes as part of being active in the racing circuit for at least two years plays a valuable role in making a horse victorious in the Great Indian Derby. Same as option A of the form   If B then A  
(D) It is possible, on the off chance, for a horse to win the Great Indian Derby even if it has not been active in the racing circuit for at least two years.   If A then not B   (not necessarily true)
(E) If a horse has not been part of the racing circuit for at least two years, it will not win the Great Indian Derby.   If Not B then Not A  (contrapositive form as discussed above). Definitely true

nik021 · Answer

why the answer is E and not C??
Please justify the answer!!

dcummins · Answer

Can you fully support that "The experience that comes as part of being active in the racing circuit for at least two years plays a valuable role in making a horse victorious in the Great Indian Derby".

Perhaps something else makes the horses victorious e.g. steroids, a good coach, or extreme endurance.

No matter how direct this answer choice may be it is the only thing that can be 100% supported in stemming from the facts provided.

Bunuel · Answer

Official Explanation

Answer: E

The stimulus clearly states that a horse has no chance of winning the Derby if it has not been active in the racing circuit for at least two years. Thus, E can be best inferred from this. Do not let A confuse you. To be active in the racing circuit for two years is a necessary criterion to win the Great Indian Derby but not a sufficient one. It could be possible for a horse to lose even after satisfying this criterion; however, if a horse does not satisfy this criterion, then it will definitely lose.

(B) The stimulus does not provide us information about any other horse race.

(C) The stimulus never tells us whether it is the experience or something else. For all you know, it could be the strength and endurance that comes as part of being active in the racing circuit for two years that is the reason for the success of these horses.

(D) The stimulus says no such thing. In fact, it quite clearly says that such a possibility is very unlikely

VerbalBot · Answer

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All the winners of the Great Indian Derby in the past 60 years have

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