Task: Question Answering
Input (English): Question: A large tanker can be filled by two pipes A and B in 60 and 40 minutes respectively. How many minutes will it take to fill the tanker from empty state if B is used for half the time and A and B fill it together for the other half?

 Option A: 65 min

 Option B: 99 min

 Option C: 56 min

 Option D: 1Z min

 Option E: 12 min
Output (English): Option D