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: which number can we add to 897326 to get a number exactly divisible by 456 ? 
Options: a ) 58 , b ) 66 , c ) 74 , d ) 82 , e ) 90
Example Output: d

Example Input: Problem: there are some people in party , 1 / 3 rd left the party . then 2 / 5 th of the remaining left the party , then 2 / 3 rd of the remaining left the party . at last 10 were remaining . how many people were in total ? 
Options: a ) 45 , b ) 27 , c ) 28 , d ) 26 , e ) 75
Example Output: e

Example Input: Problem: when positive integer k is divided by 5 , the remainder is 2 . when k is divided by 6 , the remainder is 5 . if k is less than 39 , what is the remainder when k is divided by 7 ? 
Options: a ) 4 , b ) 5 , c ) 6 , d ) 3 , e ) 7
Example Output:
d