Task: Question Answering
Input (English): Problem: present birth rate is 32 per 1000 while death rate is 11 per 1000 . what will be the percentage increase in the rate of population ? 
Options: a ) 0.21 % , b ) 21 % , c ) 0.021 % , d ) 2.1 % , e ) none of these
Output (English): d