Let U be the universal set, where: U={1,2,3,..., 18, 19, 20} Let sets A and B be subsets of U, where: Set A= {1,4,5,7,9, 13, 14, 18} Set B = {1,3,4, 7, 8, 9, 10, 11, 13, 14, 16, 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: AnB={ } 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.