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

Input: Consider Input: Problem: two whole numbers whose sum is 36 can not be in the ratio 
Options: a ) 2 : 4 , b ) 3 : 4 , c ) 3 : 6 , d ) 1 : 3 , e ) 3 : 36

Output: b


Input: Consider Input: Problem: find the number of different prime factors of 25650 
Options: a ) 4 , b ) 2 , c ) 3 , d ) 5 , e ) 6

Output: a


Input: Consider Input: Problem: a grocery store bought some mangoes at a rate of 5 for a dollar . they were separated into two stacks , one of which was sold at a rate of 3 for a dollar and the other at a rate of 9 for a dollar . what was the ratio of the number of mangoes in the two stacks if the store broke even after having sold all of its mangoes ? 
Options: a ) 1 : 4 , b ) 1 : 5 , c ) 3 : 2 , d ) 1 : 2 , e ) 2 : 5


Output: c