A cylindrical tank holds 20,000 gallons of water, which can be drained from the bottom of the tank in 20 minutes. Below is a table of data giving the volume V of water (in gallons) in the tank at time t in minutes, where time t = 0 corresponds to the instant the tank starts to drain. f V(t ) f V(t ) 0 20000 11 4050 1 18050 12 3200 2 16200 13 2450 3 14450 14 1800 4 12800 15 1250 5 11250 16 6 9800 17 450 7 8450 18 200 00 7200 19 50 6050 20 10 3000 The average rate of water draining from the tank is greatest during which of the following time intervals? A. From time t = 7 to t = 14 O B. From time t = 14 to t = 20 O C. From time t = 2 to t = 4 O D. From time t = 4 to t = 5 O E. From time t = 4 to t = 7