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: a man has rs . 400 in the denominations of one - rupee notes , 5 - rupee notes and 10 rupee notes . the number of notes of each denomination is equal . what is the total number of notes that he has ? 
Options: a ) 45 , b ) 60 , c ) 75 , d ) 90 , e ) 95

Ex Output:
c


Ex Input:
Problem: how many points ( x , y ) lie on the line segment between ( 32 , 12 2 / 3 ) and ( 7 , 17 2 / 3 ) such that x and y are both integers ? 
Options: a ) one , b ) 4 , c ) 5 , d ) 8 , e ) 9

Ex Output:
c


Ex Input:
Problem: what does the hexa number e 78 in radix 7 . 
Options: a ) 12455 , b ) 14153 , c ) 14256 , d ) 13541 , e ) 14541

Ex Output:

d