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 bowl was filled with 10 ounces of water , and 0.00008 ounce of the water evaporated each day during a 50 - day period . what percent of the original amount of water evaporated during this period ? 
Options: a ) 0.004 % , b ) 0.04 % , c ) 0.40 % , d ) 4 % , e ) 40 %

Ex Output:
b


Ex Input:
Problem: a trader bought a car at 5 % discount on its original price . he sold it at a 60 % increase on the price he bought it . what percent of profit did he make on the original price ? 
Options: a ) 17 % , b ) 62 % , c ) 52 % , d ) 19 % , e ) 22 %

Ex Output:
c


Ex Input:
Problem: find the missing figures : 0.1 % of ? = 0.24 
Options: a ) 12 , b ) 120 , c ) 24 , d ) 240 , e ) 36

Ex Output:

d