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