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 man invested rs . 14400 in rs . 100 shares of a company at 20 % premium . if his company declares 5 % dividend at the end of the year , then how much does he get ? 
Options: a ) 234 , b ) 600 , c ) 388 , d ) 278 , e ) 129
Example Output: b

Example Input: Problem: what annual installment will discharge a debt of rs . 1428 due in 3 years at 12 % simple interest ? 
Options: a ) 315 , b ) 345 , c ) 425 , d ) 335 , e ) none of them
Example Output: c

Example Input: Problem: in town x , 64 percent of the population are employed , and 44 percent of the population are employed males . what percent of the employed people in town x are females ? 
Options: a ) 16 % , b ) 55 % , c ) 29 % , d ) 40 % , e ) 52 %
Example Output:
c