Answer:
A. 1. S
2. S
3. S
4. NS
5. NS
B. 6. C = {P,H,I,L,I,P,P,I,N,E,S}
7. (i forgot how to answer this sorry)
8. D = {} because there's no month that starts with B
9. (sorry again)
C. 10. n(C) = 4
11. n(D) = 6
12. n(F) = 3
