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: 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: exactly 5 % of the reporters for a certain wire service cover local politics in country x . if 30 % of the reporters who cover politics for the wire service do not cover local politics in country x , what percent of the reporters for the wire service do not cover politics ? 
Options: a ) 20 % , b ) 42 % , c ) 44 % , d ) 92 % , e ) 90 %

Ex Output:
d


Ex Input:
Problem: the ratio of investments of two partners p and q is 7 : 5 and the ratio of their profits is 7 : 11 . if p invested the money for 5 months , find for how much time did q invest the money ? 
Options: a ) 19 , b ) 17 , c ) 13 , d ) 11 , e ) 12

Ex Output:

d