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: how long will a boy take to run round a square field of side 50 meters , if he runs at the rate of 10 km / hr ? 
Options: a ) 52 sec , b ) 45 sec , c ) 72 sec , d ) 25 sec , e ) 39 sec

Ex Output:
c


Ex Input:
Problem: in a recent election , geoff received 1 percent of the 6,000 votes cast . to win the election , a candidate needed to receive more than x % of the vote . if geoff needed exactly 3,571 more votes to win the election , what is the value of x ? 
Options: a ) 50 , b ) 54 , c ) 56 , d ) 60 , e ) 60.5

Ex Output:
e


Ex Input:
Problem: find the amount on rs . 5000 in 2 years , the rate of interest being 5 % per first year and 6 % for the second year ? 
Options: a ) 3377 , b ) 2678 , c ) 5565 , d ) 1976 , e ) 1671

Ex Output:

c