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: reena took a loan of $ . 1200 with simple interest for as many years as the rate of interest . if she paid $ 588 as interest at the end of the loan period , what was the rate of interest ? 
Options: a ) 3.6 , b ) 7 , c ) 18 , d ) can not be determined , e ) none of these

Ex Output:
b


Ex Input:
Problem: a cycle is bought for rs . 1120 and sold for rs . 1200 , find the gain percent ? 
Options: a ) 7 % , b ) 2 % , c ) 6 % , d ) 1 % , e ) 8 %

Ex Output:
a


Ex Input:
Problem: each of the cucumbers in 100 pounds of cucumbers is composed of 99 % water , by weight . after some of the water evaporates , the cucumbers are now 95 % water by weight . what is the new weight of the cucumbers , in pounds ? 
Options: a ) 2 , b ) 20 , c ) 92 , d ) 96 , e ) 98

Ex Output:

b