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

Example Input: Problem: how many zeros does 1000 ! end with ? 
Options: a ) 20 o , b ) 24 o , c ) 249 , d ) 30 o , e ) 325
Example Output: c

Example Input: Problem: find the ratio in which rice at rs . 7.20 a kg be mixed with rice at rs . 5.60 a kg to produce a mixture worth rs . 6.30 a kg 
Options: a ) 2 : 0 , b ) 2 : 3 , c ) 2 : 1 , d ) 2 : 2 , e ) 7 : 9
Example Output: e

Example Input: Problem: the ratio of numbers is 3 : 4 and their h . c . f is 4 . their l . c . m is : 
Options: a ) 12 , b ) 16 , c ) 24 , d ) 48 , e ) 98
Example Output:
d