In this task, you need to provide the correct option for a given problem from the provided options.

Example Input: Problem: a certain fruit stand sold apples for $ 0.70 each and bananas for $ 0.60 each . if a customer purchased both apples and bananas from the stand for a total of $ 6.30 , what total number of apples and bananas did the customer purchase ? 
Options: a ) 8 , b ) 9 , c ) 10 , d ) 11 , e ) 12
Example Output: c

Example Input: Problem: of the 55 cars on a car lot , 40 have air - conditioning , 25 have power windows , and 12 have both air - conditioning and power windows . how many of the cars on the lot have neither air - conditioning nor power windows ? 
Options: a ) 15 , b ) 8 , c ) 10 , d ) 2 , e ) 18
Example Output: d

Example Input: Problem: if both 5 ^ 2 and 3 ^ 3 are factors of n x ( 2 ^ 5 ) x ( 6 ^ 2 ) x ( 7 ^ 3 ) , what is the smallest possible positive value of n ? . 
Options: a ) 25 , b ) 27 , c ) 45 , d ) 75 , e ) 125
Example Output:
d