Task: Question Answering
Input (English): Question: A can do a piece of work in 5 hours; B and C together can do it in 3 hours, while A and C together can do it in 2 hours. How long will B alone take to do it?

 Option A: 30

 Option B: 20

 Option C: 10

 Option D: 6

 Option E: 5
Output (English): Option A