Miriam has a bamboo plant that is 20 centimeters tall. The plant grows at a rate of 2 centimeters a week. Which recursive formula gives the plant's height at any week in the future?
A. Next = 20* now+12 , starting at 12
B. Next = now+2 , starting at 20
C. Next = now+20 , starting at 2
D. Next = now+20 , starting at 12
E. Next = 12* now+20 , starting at 20