A. From Exercises 8.7 on page 661 of the Book: 1, 3, 7, 9, 15, 18, 21, 29, 31, 37, 45.
B. From Exercises 8.8 on page 671 of the Book: 5, 6, 11, 15, 19, 27, 37, 41, 42.
C. From Exercises 8.9 on page 677 of the Book: 1, 2, 5, 7, 9, 11, 17, 31, 32.
