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: what is the ratio of 3 / 7 to the product 2 * ( 7 / 3 ) ? 
Options: a ) 3 : 7 , b ) 9 : 98 , c ) 3 : 21 , d ) 1 : 7 , e ) 3 : 49
Example Output: b

Example Input: Problem: find the smallest positive integer n such that 11 n - 1 is divisible by 105 . 
Options: a ) 3 , b ) 4 , c ) 5 , d ) 6 , e ) 7
Example Output: d

Example Input: Problem: a no . when divided by the sum of 555 and 445 gives 2 times their difference as quotient & 30 as remainder . find the no . is ? 
Options: a ) 122443 , b ) 154546 , c ) 165454 , d ) 186545 , e ) 220030
Example Output:
e