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: ? % of 360 = 108.0 
Options: a ) 277 , b ) 36 , c ) 64 , d ) 72 , e ) 30

Ex Output:
e


Ex Input:
Problem: a fruit seller had some oranges . he sells 30 % oranges and still has 420 oranges . how many oranges he had originally ? 
Options: a ) 420 , b ) 600 , c ) 220 , d ) 400 , e ) none of these

Ex Output:
b


Ex Input:
Problem: at a certain university , 66 % of the professors are women , and 70 % of the professors are tenured . if 90 % of the professors are women , tenured , or both , then what percent of the men are tenured ? 
Options: a ) 25 , b ) 37.5 , c ) 60 , d ) 62.5 , e ) 75

Ex Output:

c