The purchase price of Beth's new car, including the sales tax, is $8,0

The purchase price of Beth's new car, including the sales tax, is $8,000. If she finances the car, making a down payment of $2,000 and paying off the rest in equal monthly installments, what will be the total cost of the car, including the sales tax and financing ?

(1) The installments are to be $200 per month.
(2) The installments will extend over a period of exactly 3 years

dollytaneja51 I'm not understanding how Statement (1) is insufficient. If we know the amount paid for the car is $8,000 inclusive of taxes and the down payment is $2,000, wouldn't we then infer that $8,000-$2,000=$6,000 is being paid off in installment loans?

Then we could say that since the installments are $200/month, we'd have $6,000/$200=30 months to pay off the car. The cost would still be equal to $8,000 in this case, right? Maybe I'm just not understanding the problem correctly. Also, Statement (1) seems to contradict Statement (2), since 30 months=2.5 yrs, not 3 years. Usually not something we see in a DS problem.­

Bunuel, carcass,
The purchase price of Beth's new car, including the sales tax, is $8,000. If she finances the car, making a down payment of $2,000 and paying off the rest in equal monthly installments, what will be the total cost of the car, including the sales tax and financing ?

(1) The installments are to be $200 per month.
(2) The installments will extend over a period of exactly 3 years

Could you please explain how the answer is C and E ?

Clearly, I get St. 1 & 2 as not sufficient but both together also is not sufficient as we don't know the anything about financing %. It could be 0% , 5%, 10% etc. as financing.

My approach of St. 1 & 2. Combine :-
36 months * $200 = $7,200. During purchase of the car $8000 - $2000 = $6000 (balance amt). But paid $7,200, an extra $1,200. From this how to get the actual cost of the car ?
Do we need to back calculate to find the actual cost of the car ?­­