Task: Question Answering
Input (English): Question: A tank is filled in eight hours by three pipes A, B and C. Pipe A is twice as fast as pipe B, and B is twice as fast as C. How much time will pipe B alone take to fill the tank?

 Option A: 18 hours

 Option B: 28 hours

 Option C: 98 hours

 Option D: 16 hours

 Option E: 12 hours
Output (English): Option B