Problem 1 (10 points; 2 points each) For each of these subsets in problems 4a to 4e, decide which is the relations on the set {1, 2, 3, 4,6}, decide whether it is reflexive, symmetric, antisymmetric, and/or transitive. Explain your answer. a) {(2, 2), (2, 3), (2, 4), (3, 2), (3, 3), (3, 4)} b) {(1, 1), (1, 2), (2, 1), (2, 2), (3, 3), (4, 4)} c) {(2, 4), (4, 2), (3, 6)} d) {(2, 2), (2, 3), (3, 2)} e ) {(1, 3), (1, 4), (2, 3), (2, 4), (3, 1), (3, 4), (2. -2)}