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: 120 + 520 ÷ 5.00 = ? 
Options: a ) 100 , b ) 150 , c ) 120 , d ) 520 , e ) none
Example Output: e

Example Input: Problem: a student chose a number , multiplied it by 8 , then subtracted 138 from the result and got 102 . what was the number he chose ? 
Options: a ) 30 , b ) 120 , c ) 130 , d ) 140 , e ) 150
Example Output: a

Example Input: Problem: what is the total number of y integers between 100 and 200 that are divisible by 3 ? 
Options: a ) 33 , b ) 32 , c ) 31 , d ) 30 , e ) 29
Example Output:
a