Definition: 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'.
Input: Problem: if the average of 37 , 69 , 47 and x is 46.5 , what is x ? 
Options: a ) 37 , b ) 41 , c ) 50 , d ) 59 , e ) 33
Output:
e