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 each edge of cube increased by 10 % , the percentage increase in 
Options: a ) 21 , b ) 22 , c ) 25 , d ) 19 , e ) 15

Ex Output:
a


Ex Input:
Problem: what is 15 percent of 44 ? 
Options: a ) 6.6 , b ) 7.8 , c ) 8.9 , d ) 9.4 , e ) 10.2

Ex Output:
a


Ex Input:
Problem: if a speaks the truth 75 % of the times , b speaks the truth 60 % of the times . what is the probability that they tell the truth at the same time 
Options: a ) 0.49 , b ) 0.48 , c ) 0.45 , d ) 0.482 , e ) 0.411

Ex Output:

c