Let S = {1,2,3,...,18,19,20} be the universal set. Let sets A and B be subsets of S, where: Set A = {1, 3, 4, 6, 7, 9, 12, 16, 17, 18} Set B = {1, 2, 3, 4, 6, 10, 11, 12, 13, 14, 15, 16, 17} LIST the elements in Set A and Set B: { } LIST the elements in Set A or Set B: { Enter the elements as a list, separated by commas. If the result is the empty set, enter DNE​