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 sum of money at simple interest amounts to $ 815 in 3 years and to $ 854 in 4 years . the sum is : 
Options: a ) $ 153 , b ) $ 698 , c ) $ 398 , d ) $ 549 , e ) $ 675

Ex Output:
b


Ex Input:
Problem: in a company , 54 percent of the employees are men . if 60 percent of the employees are unionized and 70 percent of these are men , what percent of the non - union employees are women ? 
Options: a ) 55 % , b ) 60 % , c ) 65 % , d ) 70 % , e ) 75 %

Ex Output:
d


Ex Input:
Problem: what sum of money will produce rs . 90 as simple interest in 4 years at 4 1 / 2 percent ? 
Options: a ) rs . 550 , b ) rs . 650 , c ) rs . 600 , d ) rs . 500 , e ) rs . 700

Ex Output:

d