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: by selling an article for $ 110 , a person gains $ 10 . what is the gain % ? 
Options: a ) 25 % , b ) 30 % , c ) 50 % , d ) 20 % , e ) 10 %
Example Output: e

Example Input: Problem: john makes $ 60 a week from his job . he earns a raise and now makes $ 110 a week . what is the % increase ? 
Options: a ) 16 % , b ) 83.33 % , c ) 17 % , d ) 17.61 % , e ) 17.56 %
Example Output: b

Example Input: Problem: in town x , 64 percent of the population are employed , and 35 percent of the population are employed males . what percent of the employed people in town x are females ? 
Options: a ) 16 % , b ) 25 % , c ) 32 % , d ) 45 % , e ) 52 %
Example Output:
d