In this task, you need to answer the given multiple-choice question on the gain. Gain is the value by which to multiply the input. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.

Ex Input:
Problem: a candidate got 35 % of the votes polled and he lost to his rival by 2430 votes . how many votes were cast ? 
Options: a ) 7500 , b ) 3388 , c ) 8100 , d ) 2888 , e ) 2661

Ex Output:
c


Ex Input:
Problem: a money lender finds that due to a fall in the annual rate of interest from 8 % to 7 2 / 7 % his yearly income diminishes by rs . 61.50 . his capital is 
Options: a ) 22.378 , b ) 87.86 , c ) 246.0 , d ) 78.88 , e ) 127.71

Ex Output:
b


Ex Input:
Problem: a retailer buys a radio for rs 225 . his overhead expenses are rs 15 . he sellis the radio for rs 300 . the profit percent of the retailer is 
Options: a ) 10 % , b ) 50 % , c ) 25 % , d ) 52 % , e ) none of these

Ex Output:

c