Task: Question Answering
Input (English): Problem: in a garment industry, 12 men working 9 hours per day complete a piece of work in 10 days. to complete the same work in 12 days, working 15 hours a day, the number of men required is :
Options: a. 4, b. 5, c. 6, d. 7, e. 9
Output (English): d