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: how many three - digit whole numbers yield a remainder of 1 when divided by 10 and also yield a remainder of 1 when divided by 6 ? 
Options: a ) none , b ) one , c ) two , d ) three , e ) four

Ex Output:
a


Ex Input:
Problem: find the value of ( 55 + 113 / 78 ) × 78 
Options: a ) 4423 , b ) 4403 , c ) 4413 , d ) 2403 , e ) 4375

Ex Output:
b


Ex Input:
Problem: there are 32 balls which are red , blue or green . if 15 balls are green and the sum of red balls and green balls is less than 23 , at most how many red balls are there ? 
Options: a ) 4 , b ) 5 , c ) 6 , d ) 7 , e ) 8

Ex Output:

d