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: during a sale of 20 % on everything in a store , a kid is successful in convincing the store manager to give him 20 candies for the discounted price of 14 candies . the store still makes a profit of 18 % on this sale . what is the mark up percentage on each candy ?
Options: a ) 100 % , b ) 80 % , c ) 75 % , d ) 66 + 2 / 3 % , e ) 55 %

Ex Output:
d

Ex Input:
Problem: at what rate percent on simple interest will rs . 1750 amount to rs . 2000 in 4 years ?
Options: a ) 4 % , b ) 3.57 % , c ) 2 6 / 7 % , d ) 5 % , e ) 6 %

Ex Output:
b