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: raman ' s salary was decreased by 50 % and subsequently increased by 50 % . how much percent does he loss .
Options: a ) 75 , b ) 65 , c ) 45 , d ) 25 , e ) 85

Ex Output:
d

Ex Input:
Problem: what is 120 % of 13 / 24 of 840 ?
Options: a ) 436 , b ) 478 , c ) 512 , d ) 546 , e ) 620

Ex Output:
d

Ex Input:
Problem: in the first 25 overs of a cricket game , the run rate was only 5.4 . what should be the run rate in the remaining 25 overs to reach the target of 400 runs ?
Options: a ) 16.5 , b ) 13.2 , c ) 10.6 , d ) 11.2 , e ) 7.25

Ex Output:
c