2. 20pts) Given two sets A and B, we define A B = {x2 is an element of exactly one of A or B}, and we call this set the symmetric difference of A and B. (a) Determine {1, 3, 8, 9} {2,3,4,7,8). (b) Write A e B in terms of the sets A and B using only the operations of union, intersection, and difference. (c) Draw the Venn diagram of symmetric difference operation