Task: Question Answering
Input (English): Question: A cylindrical water tower with radius 14 m and height 20 m is 3/4 full at noon. Every minute, .08π m3 is drawn from tank, while .03π m3 is added. Additionally, starting at 1pm and continuing each hour on the hour, there is a periodic drain of 4π m3. From noon, how many hours will it take to drain the entire tank?

 Option A: 420 2/7

 Option B: 420 6/7

 Option C: 421

 Option D: 421 3/7

 Option E: 420
Output (English): Option E