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 watch was sold at a loss of 10 % . if it was sold for rs . 140 more , there would have been a gain of 2 % . what is the cost price ? 
Options: a ) s . 1000 , b ) s . 1009 , c ) s . 1166.7 , d ) s . 1006 , e ) s . 1002

Ex Output:
c


Ex Input:
Problem: a number exceeds 20 % of itself by 40 . the number is ? 
Options: a ) 50 , b ) 60 , c ) 80 , d ) 320 , e ) none

Ex Output:
a


Ex Input:
Problem: the difference between simple and compound interest on rs . 1400 for one year at 10 % per annum reckoned half - yearly is ? 
Options: a ) 8.25 , b ) 3.5 , c ) 9.0 , d ) 3.15 , e ) 2.0

Ex Output:

b