Task: Question Answering
Input (English): Question: Four pipes fill a cistern in 15,20,30 and 60 hours.The first was opened at 6 am,the second at 8 am,third at 10 am and fourth at noon.When will the reservoir be full?

 Option A: 1PM

 Option B: 2PM

 Option C: 3PM

 Option D: 4PM

 Option E: 5PM
Output (English): Option B