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: how many numbers between 190 and 580 are divisible by 45 and 6 ? 
Options: a ) 6 , b ) 7 , c ) 8 , d ) 9 , e ) 10

Ex Output:
a


Ex Input:
Problem: if xy denotes x is raised to the power y , find the last two digits of 19413843 + 19614181 
Options: a ) 67 , b ) 97 , c ) 55 , d ) 32 , e ) 62

Ex Output:
e


Ex Input:
Problem: julian owes his classmate jenny 20 dollars . if he borrows 8 dollars how much will he owe her ? 
Options: a ) 28 , b ) 12 , c ) - 28 , d ) 12 , e ) 0

Ex Output:

c