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'.

Input: Consider Input: Problem: john found that the average of 15 numbers is 40 . if 12 is added to each number then the mean of number is ? 
Options: a ) 52 , b ) 45 , c ) 65 , d ) 78 , e ) 64

Output: a


Input: Consider 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

Output: e


Input: Consider Input: Problem: what is the remainder of r = 3 ^ 19 when divided by 10 ? 
Options: a ) 0 , b ) 1 , c ) 5 , d ) 7 , e ) 9


Output: d