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: a present value of a machine is $ 900 . its value depletiation rate is 25 % per annum then find the machine value before 2 years ? 
Options: a ) $ 1500 , b ) $ 1200 , c ) $ 1600 , d ) $ 1000 , e ) $ 1350

Ex Output:
c


Ex Input:
Problem: in how many years rs 160 will produce the same interest at 8 % as rs . 500 produce in 4 years at 8 % 
Options: a ) 13 , b ) 13.5 , c ) 11.5 , d ) 12.5 , e ) 12

Ex Output:
d


Ex Input:
Problem: there were two candidates in an election . winner candidate received 65 % of votes and won the election by 300 votes . find the number of votes casted to the winning candidate ? 
Options: a ) 228 , b ) 744 , c ) 255 , d ) 650 , e ) 231

Ex Output:

d