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

Input: Consider Input: Problem: if 1 = 3 2 = 6 3 = 9 4 = 12 5 = 15 then 9 = ? hint : its a logic riddle not a mathematical riddle 
Options: a ) 1 , b ) 2 , c ) 3 , d ) 4 , e ) 5

Output: c


Input: Consider Input: Problem: what is the square root of 3,249 ? 
Options: a ) a ) 18 , b ) b ) 9 , c ) c ) 45 , d ) d ) 62 , e ) e ) 57

Output: e


Input: Consider Input: Problem: three numbers are in the ratio of 2 : 3 : 4 and their l . c . m . is 180 . what is their h . c . f . ? 
Options: a ) 15 , b ) 20 , c ) 40 , d ) 60 , e ) 70


Output: a