Task: Question Answering
Input (English): Problem: a grocer has a sale of rs . 4435 , rs . 4927 , rs . 4855 , rs . 5230 and rs . 4562 for 5 consecutive months . how much sale must he have in the sixth month so that he gets an average sale of rs . 4500 ? 
Options: a ) 1991 , b ) 2991 , c ) 3991 , d ) 4521 , e ) 5991
Output (English): b