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

Example Input: Problem: find the compound ratio of ( 2 : 3 ) , ( 5 : 11 ) and ( 11 : 2 ) is 
Options: a ) 3 : 2 , b ) 2 : 1 , c ) 1 : 2 , d ) 4 : 5 , e ) 5 : 3
Example Output: e

Example Input: Problem: in a ratio which is equal to 7 : 9 , if the antecedent is 42 , then the consequent is ? 
Options: a ) 72 , b ) 54 , c ) 64 , d ) 51 , e ) 45
Example Output: b

Example Input: Problem: ratio between rahul and deepak is 4 : 3 , after 6 years rahul age will be 30 years . what is deepak present age ? 
Options: a ) 18 , b ) 15 , c ) 77 , d ) 266 , e ) 182
Example Output:
a