Task: Question Answering
Input (English): Problem: in the first 20 overs of a cricket game , the run rate was only 4.2 . what should be the rate in the remaining 30 overs to reach the target of 250 runs ? 
Options: a ) 6.25 , b ) 6.28 , c ) 6.11 , d ) 5.53 , e ) 6.21
Output (English): d