In the fall of 1996 , a total of 800 students participated in an annual school clean-up day. The organizers of the event expect that in each of the years 1997, 1998, and 1999, participation will increase by 50 \% over the previous year. The number of participants the organizers expect in the fall of 1999 is
Answer Choices
A. 1200
B. 1500
C. 2000
D. 2400
E. 2700