Task: Question Answering
Input (English): Question: A can do a piece of work in 4 hours; B and C together can do it in 3 hours, which A and C together can do it in 2 hours. How long will B alone take to do it?

 Option A: 1/19

 Option B: 1/11

 Option C: 1/12

 Option D: 1/17

 Option E: 1/14
Output (English): Option C