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'.

Example Input: Problem: a trader bought a car at 5 % discount on its original price . he sold it at a 60 % increase on the price he bought it . what percent of profit did he make on the original price ? 
Options: a ) 17 % , b ) 62 % , c ) 52 % , d ) 19 % , e ) 22 %
Example Output: c

Example Input: Problem: at an elementary school , 60 % of the faculty members are women and 60 % of the faculty members are married . if 3 / 4 of the men are single , what fraction of the women are married ? 
Options: a ) 5 ⁄ 7 , b ) 7 ⁄ 10 , c ) 1 ⁄ 3 , d ) 7 ⁄ 30 , e ) 5 ⁄ 6
Example Output: e

Example Input: Problem: the population of a town is 10000 . it increases annually at the rate of 10 % p . a . what will be its population after 2 years ? 
Options: a ) 12100 , b ) 14400 , c ) 14500 , d ) 14600 , e ) 14700
Example Output:
a