Answers to the 2006 PRISM problems

Here are the answers to the problems. Please note that the answer keys are the same for the junior and senior problems.
Junior Senior
1. D D
2. B B
3. A A
4. E E
5. B B
6. C C
7. B B
8. D D
9. A A
10. D D
11. E E
12. C C
13. E E
14. C C
15. A A
16. C C
17. B B
18. E E
19. B B
20. D D