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: if price of t . v set is reduced by 10 % , then its sale increases by 85 % , find net effect on sale value 
Options: a ) 44 , b ) 45 , c ) 46 , d ) 67 , e ) 48

Ex Output:
d


Ex Input:
Problem: one night 17 percent of the female officers on a police force were on duty . if 170 police officers were on duty that night and half of these were female officers , how many female officers were on the police force ? 
Options: a ) 400 , b ) 420 , c ) 450 , d ) 480 , e ) 500

Ex Output:
e


Ex Input:
Problem: find the simple interest on $ 3200 for 3 years at 10 % per annum ? 
Options: a ) $ 250 , b ) $ 300 , c ) $ 500 , d ) $ 600 , e ) $ 960

Ex Output:

e