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: if 28 % of a number exceeds 18 % of it by 7.2 , then find the number ? 
Options: a ) 50 , b ) 34 , c ) 55 , d ) 60 , e ) 90

Ex Output:
e


Ex Input:
Problem: a side of beef lost 35 percent of its weight in processing . if the side of beef weighed 560 pounds after processing , how many pounds did it weigh before processing ? 
Options: a ) 191 , b ) 355 , c ) 737 , d ) 861 , e ) 1,560

Ex Output:
d


Ex Input:
Problem: two men started from the same place walk at the rate of 10 kmph and 12 kmph respectively . what time will they take to be 16 km apart , if they walk in the same direction ? 
Options: a ) 5 hours , b ) 6 hours , c ) 8 hours , d ) 16 hours , e ) 12 hours

Ex Output:

c