Pascal High School organized three different trips. Fifty percent of the students went on the first trip, 80\% went on the second trip, and 90\% went on the third trip. A total of 160 students went on all three trips, and all of the other students went on exactly two trips. How many students are at Pascal High School?
Answer Choices
A. 1400
B. 600
C. 1200
D. 800
E. 1600