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: shop offered 20 % offer for every shirt , smith bought a shirt at rs . 780 . and what was the shop ' s original selling price ? 
Options: a ) 500 , b ) 550 , c ) 600 , d ) 700 , e ) 975

Ex Output:
e


Ex Input:
Problem: p and q invested in a business . the profit earned was divided in the ratio 4 : 5 . if p invested rs 52000 , the amount invested by q is 
Options: a ) 30000 , b ) 50000 , c ) 40000 , d ) 20000 , e ) 65000

Ex Output:
e


Ex Input:
Problem: shop offered 30 % offer for every shirt , smith bought a shirt at rs . 560 . and what was the shop ' s original selling price ? 
Options: a ) 500 , b ) 800 , c ) 600 , d ) 700 , e ) 750

Ex Output:

b