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'.

Input: Consider Input: Problem: the product of two numbers is 2028 and their h . c . f is 13 . the number of such pairs is : 
Options: a ) 1 , b ) 2 , c ) 3 , d ) 4 , e ) 5

Output: b


Input: Consider Input: Problem: a number when divided by a certain divisor left remainder 241 , when twice the number was divided by the same divisor , the remainder was 115 . find the divisor ? 
Options: a ) 370 , b ) 365 , c ) 380 , d ) 367 , e ) 460

Output: d


Input: Consider Input: Problem: the lowest number which should be added to 11390 so that the sum is exactly divisible by 7 , 9 , 10 and 12 is : 
Options: a ) 1010 , b ) 2210 , c ) 1250 , d ) 1210 , e ) 1110


Output: d