For A, B as in Exercise 2, determine the following: (a) | A X B |; (b) the number of relations from A to B; (c) the number of relations on A; (d) the number of relations from A to B that contain (1,2) and (1, 5); (e) the number of relations from A to B that contain exactly five ordered pairs; and (f) the number of relations on A that contain at least seven elements.