Given: F = {(0, 1), (2, 4), (4, 6), (6, 8)} and G = {(2, 5), (4, 7), (5, 8), (6, 9), (7, 5)} Find the common domain of F and G. {2, 4, 6} {1, 4, 6, 8} {0, 2, 4, 6}