Let be the set of all sets (not just the ones appearing below) Let = {1,{2,{3,4},{,},{5,6,7,8,9,0}}} Let = {1, 2, 3, 4} Let = {1, {2, 3}, {4, 5}} Let= {|(())} Answer the following questions. a. Which of these sets, , , or , has the largest cardinality? b. What is the cardinality of each set? c. What is the intersection ( ) ? d. What is the cardinality of ? e. What is the cardinality of the largest element of ?