Task: Question Answering
Input (English): Question: Two pipes A and B can separately fill a tank in 2 minutes and 15 minutes respectively. Both the pipes are opened together but 4 minutes after the start the pipe A is turned off. How much time will it take to fill the tank?

 Option A: 17

 Option B: 10

 Option C: 23

 Option D: 27

 Option E: 72
Output (English): Option B