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: each child has 6 crayons and 12 apples . if there are 12 children , how many crayons are there in total ?
Options: a ) 22 , b ) 65 , c ) 72 , d ) 78 , e ) 90
Example Output: c

Example Input: Problem: lilly has 10 fish and rosy has 12 fish . in total , how many fish do they have in all ?
Options: a ) 18 , b ) 20 , c ) 22 , d ) 24 , e ) 26
Example Output: c

Example Input: Problem: a room is 8 meters 16 centimeters in length and 4 meters 32 centimeters in width . find the least number of square tiles of equal size required to cover the entire floor of the room .
Options: a ) 107 , b ) 153 , c ) 178 , d ) 198 , e ) 165
Example Output:
b