Yes agree with you, answer should be B.
I think its taking into consideration that B won more points apart from these three events in statement 2.
There is something to do with the language of the question,
Maybe we should post this question in Verbal section.. My solution:8 Event:
Total Points:1+2+3+4+5+6+7+8= 36
Total Points A received > Total Points B received ?
Statement 1:If team A won 7th and 8th event, points= 8+7=15
Now A won atleast 1 more event so it could be any number of events apart from these two.
if it A won 1st event, Total Point A received= 15+1=16
Then Total Points B received= 36-16=20
Points A< Point B, No
If A won 6th event
Total Point A received= 15+6= 21
Total Point B received= 36-21= 15
Points A> Points B, Yes
No definite yes or no, Insufficient.
Statement 2: Team B won the third, fourth, and fifth events, total points= 3+4+5 =12
Total Points A= 36-12=24
Points A> Point B, Sufficient
Answer: B