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: ( x + 3 ) is a factor in x ^ 2 - mx - 15 . what is the value of m ? 
Options: a ) 1 , b ) 2 , c ) 3 , d ) 4 , e ) 5

Ex Output:
b


Ex Input:
Problem: how many halves are there in 9 - fourth ? 
Options: a ) 8 , b ) 4.5 , c ) 3.2 , d ) 7 , e ) 3

Ex Output:
b


Ex Input:
Problem: the sum of the first 50 positive even integers is 2550 . what is the sum of the even integers from 202 to 300 inclusive ? 
Options: a ) 5,150 , b ) 7,550 , c ) 10,150 , d ) 12,550 , e ) 20,150

Ex Output:

d