Task: Question Answering
Input (English): Problem: a grocery shop has a sale of rs . 6635 , rs . 6927 , rs . 6855 , rs . 7230 and rs . 6562 for 5 consecutive months . how much sale must he have in the sixth month so that he gets an average sale of rs . 6500 ? 
Options: a ) 4857 , b ) 4184 , c ) 4012 , d ) 4791 , e ) 5291
Output (English): d