Task: Question Answering
Input (English): Question: A tap can fill a tank in 6 hours. After half the tank is filled, three more similar taps are opened. What is the total time taken to fill the tank completely?

 Option A: 3hr

 Option B: 3hr 45min

 Option C: 4hr 15min

 Option D: 2hr 1min

 Option E: 1hr 45min
Output (English): Option B