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: if | 5 x - 5 | = 150 , what is the sum of all the possible values of x ? 
Options: a ) 2 , b ) - 2 , c ) 6 , d ) - 3 , e ) 5

Ex Output:
a


Ex Input:
Problem: a ferry can transport 50 tons of vehicles . automobiles range in weight from 1600 to 3200 pounds . what is the greatest number of automobiles that can be loaded onto the ferry ? 
Options: a ) 23 , b ) 41 , c ) 48 , d ) 62 , e ) 86

Ex Output:
d


Ex Input:
Problem: the divisor is 21 , the quotient is 14 and the remainder is 7 . what is the dividend ? 
Options: a ) 201 , b ) 394 , c ) 302 , d ) 301 , e ) 294

Ex Output:

d