Task: Question Answering
Input (English): Problem: average marks of a , b , c is 48 . when d joins average becomes 47 . e has 3 more marks than d . average marks of b , c , d , e is 48 . what is the marks of a ? 
Options: a ) 43 , b ) 44 , c ) 45 , d ) 46 , e ) 47
Output (English): a