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'.

Example Input: Problem: the number 0.8 is how much greater than 1 / 8 ? 
Options: a ) ½ , b ) 27 / 40 , c ) 1 / 50 , d ) 1 / 500 , e ) 2 / 500
Example Output: b

Example Input: Problem: in a simultaneous throw of a pair of dice , find the probability of getting a total more than 9 
Options: a ) 1 / 2 , b ) 7 / 18 , c ) 5 / 13 , d ) 5 / 12 , e ) 6 / 17
Example Output: b

Example Input: Problem: how many positive integers h less than 10000 are such that the product of their digits is 210 ? 
Options: a ) 24 , b ) 30 , c ) 48 , d ) 54 , e ) 72
Example Output:
d