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: if a ( a + 2 ) = 99 and b ( b + 2 ) = 99 , where a ≠ b , then a + b = 
Options: a ) - 2 , b ) - 5 , c ) - 8 , d ) - 10 , e ) - 12
Example Output: a

Example Input: Problem: 8 ^ 100 is divisible by 17 . find the remainder ? 
Options: a ) 10 , b ) 12 , c ) 16 , d ) 18 , e ) 20
Example Output: c

Example Input: Problem: how many 3 - digit numbers are completely divisible 6 ? 
Options: a ) 100 , b ) 150 , c ) 200 , d ) 250 , e ) 300
Example Output:
b