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: find number which is 60 % less than 120 .
Options: a ) 18 , b ) 22 , c ) 28 , d ) 48 , e ) 98

Ex Output:
d

Ex Input:
Problem: the salaries of a and b together amount to $ 6000 . a spends 95 % of his salary and b , 85 % of his . if now , their savings are the same , what is a ' s salary ?
Options: a ) $ 1000 , b ) $ 1250 , c ) $ 2500 , d ) $ 4500 , e ) $ 5200

Ex Output:
d

Ex Input:
Problem: a technician makes a round - trip to and from a certain service center by the same route . if the technician completes the drive to the center and then completes 20 percent of the drive from the center , what percent of the round - trip has the technician completed ?
Options: a ) 60 , b ) 50 , c ) 40 , d ) 70 , e ) 45

Ex Output:
a