Task: Question Answering
Input (English): Problem: in 1982 and 1983 , company b ’ s operating expenses were $ 10.0 million and $ 12.0 million , respectively , and its revenues were $ 15.6 million and $ 18.8 million , respectively . what was the percent increase in company b ’ s profit ( revenues minus operating expenses ) from 1982 to 1983 ? 
Options: a ) 3 % , b ) 16 2 / 3 % , c ) 25 % , d ) 21 3 / 7 % , e ) 60 %
Output (English): d