Task: Question Answering
Input (English): Problem: the average mark obtained by 22 candidates in an examination is 48 . the average of the first 10 is 55 while the last 11 is 40 . the marks obtained by the 11 th candidate is ? 
Options: a ) 22 , b ) 0 , c ) 49 , d ) 58 , e ) 66
Output (English): e