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: machine p and machine q are each used to manufacture 660 sprockets . it takes machine p 10 hours longer to produce 660 sprockets than machine q . machine q produces 10 % more sprockets per hour than machine a . how many sprockets per hour does machine a produce ? 
Options: a ) 5 , b ) 15 , c ) 55 , d ) 95 , e ) 6

Ex Output:
e


Ex Input:
Problem: the present population of a town is 280 . population increase rate is 10 % p . a . find the population of town after 1 years ? 
Options: a ) 100 , b ) 120 , c ) 200 , d ) 220 , e ) 308

Ex Output:
e


Ex Input:
Problem: what is the rate percent when the simple interest on rs . 800 amount to rs . 176 in 4 years ? 
Options: a ) 5 % , b ) 8 % , c ) 3 % , d ) 9 % , e ) 5.5 %

Ex Output:

e