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: point ( m , n ) is on the circle represented by m ^ 2 + n ^ 2 = 10 , and m , n are integers . how many such points are possible ? 
Options: a ) 0 , b ) 2 , c ) 4 , d ) 6 , e ) 8

Ex Output:
e


Ex Input:
Problem: find the smallest number which leaves 2235 , 48 and 61 as remainders when divided by 26 , 39 , 52 and 65 respectively . 
Options: a ) 67 , b ) 26 , c ) 99 , d ) 26 , e ) 91

Ex Output:
d


Ex Input:
Problem: what is the sum of the digits of integer k , if k = ( 10 ^ 30 - 36 ) 
Options: a ) 251 , b ) 260 , c ) 263 , d ) 269 , e ) 262

Ex Output:

e