A. From Exercises 8.2 on page 628 of the Book: 3, 5, 11, 16, 27, 37, 41, 60.
B. From Exercises 8.3 on page 638 of the Book: 3, 4, 9, 13, 19, 17, 25, 31, 43, 49, 51, 71.
C. From Exercises 8.4 on page 643 of the Book: 3, 9, 13, 25, 33, 39, 40, 41.
