9. Write union and intersection of the following sets: a. A={1,2,3,4}; B= {2,4,6,8} b. A = {a, b, c, d, e, f}; B= {a, 1, b, 2, e, 3, f, 4} Fruits = {Apple, Mellon, Grape, Tomato}; Vegetables = {Potato, Tomato, Onion} d. K= {x: X E Z}; L = {x: X EN} C