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 and b invests rs . 3000 and rs . 7000 respectively in a business . if a doubles his capital after 6 months . in what ratio should a and b divide that year ' s profit ?
Options: a ) 9 : 6 , b ) 9 : 8 , c ) 9 : 14 , d ) 9 : 9 , e ) 9 : 5

Ex Output:
c

Ex Input:
Problem: the calendar of the year 2060 can be used again in the year ?
Options: a ) 2081 , b ) 2083 , c ) 2088 , d ) 1971 , e ) 1973

Ex Output:
c

Ex Input:
Problem: find the amount on rs . 5000 in 2 years , the rate of interest being 5 % per first year and 6 % for the second year ?
Options: a ) 3377 , b ) 2678 , c ) 5565 , d ) 1976 , e ) 1671

Ex Output:
c