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: evaluate 248 + 64 − − √ − − − − − − − − − √ 
Options: a ) 14 , b ) 26 , c ) 16 , d ) 36 , e ) 46

Ex Output:
c


Ex Input:
Problem: if 15 ! / 3 ^ x is an integer , what is the greatest possible value of x ? 
Options: a ) 3 , b ) 4 , c ) 5 , d ) 6 , e ) 7

Ex Output:
d


Ex Input:
Problem: what is the value of ( 44444445 * 88888885 * 44444442 + 44444438 / 44444444 ^ 2 ) 
Options: a ) 88888883 , b ) 88888884 , c ) 88888885 , d ) 88888886 , e ) 88888873

Ex Output:

a