Let S be the universal set, where: S = {1, 2, 3, --- 18, 19, 20} Let sets A and B be subsets of S, where: Set A = {1, 2, 3, 5, 6, 8, 9, 13, 14, 16, 17, 18} Set B = {5, 6, 9, 13, 15, 16, 17, 18, 19, 20} - Find the following: LIST the elements in the set (AUB): (AUB)={ } Enter the elements as a list, separated by commas. If the result is the empty set, enter DNE LIST the elements in the set (An B): (An B) = { } Enter the elements as a list, separated by commas. If the result is the empty set, enter DNE You may want to draw a Venn Diagram to help answer this question.