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: the population of a town increases 22 % and 25 % respectively in two consecutive years . after the growth the present population of the town is 1220 . then what is the population of the town 2 years ago ? 
Options: a ) a ) 600 , b ) b ) 700 , c ) c ) 800 , d ) d ) 900 , e ) e ) 1000

Ex Output:
c


Ex Input:
Problem: if 15 % of 40 is greater than 25 % of a number by 2 , the number is 
Options: a ) 14 , b ) 16 , c ) 18 , d ) 20 , e ) 22

Ex Output:
b


Ex Input:
Problem: in town x , 64 percent of the population are employed , and 49 percent of the population are employed males . what percent of the employed people in town x are females ? 
Options: a ) 16 % , b ) 20 % , c ) 32 % , d ) 40 % , e ) 52 %

Ex Output:

b