In this task, you need to answer the given multiple-choice question on the general math. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.

Ex Input:
Problem: ashok secured average of 77 marks in 6 subjects . if the average of marks in 5 subjects is 74 , how many marks did he secure in the 6 th subject ? 
Options: a ) 38 , b ) 27 , c ) 92 , d ) 17 , e ) 80

Ex Output:
c


Ex Input:
Problem: you and your friend spent a total of $ 19 for lunch . your friend spent $ 3 more than you . how much did your friend spend on their lunch ? 
Options: a ) $ 9 , b ) $ 3 , c ) $ 4 , d ) $ 6 , e ) $ 11

Ex Output:
e


Ex Input:
Problem: what is the units digit of 33 ^ 2 * 17 ^ 3 * 49 ^ 3 ? 
Options: a ) 1 , b ) 3 , c ) 5 , d ) 7 , e ) 9

Ex Output:

b