Task: Question Answering
Input (English): Question: A tank is filled in 5 hours by three pipes A, B and C. The pipe C is twice as fast as B and B is twice as fast as A. How much time will pipe A alone take to fill the tank?

 Option A: 65 hrs

 Option B: 99 hrs

 Option C: 35 hrs

 Option D: 45 hrs

 Option E: 32 hrs
Output (English): Option C