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 a radio is purchased for rs 490 and sold for rs 465.50 find the loss % ? 
Options: a ) 5 % , b ) 4 % , c ) 6 % , d ) 8 % , e ) 7 %

Ex Output:
a


Ex Input:
Problem: find the simple interest on rs . 350 for 10 months at 5 paisa per month ? 
Options: a ) 277 , b ) 175 , c ) 288 , d ) 266 , e ) 121

Ex Output:
b


Ex Input:
Problem: what annual payment will discharge a debt of rs . 1025 due in 2 years at the rate of 5 % compound interest ? 
Options: a ) rs . 550 , b ) rs . 551.25 , c ) rs . 560 , d ) rs . 560.75 , e ) rs . 660.75

Ex Output:

b