Task: Question Answering
Input (English): Problem: 12 men work 8 hours per day to complete the work in 10 days. to complete the same work in 8 days, working 15 hours a day, the number of men required ?
Options: a. 8 days, b. 9 days, c. 11 days, d. 13 days, e. 15 days
Output (English): a