Which of the following relations has a domain of {2, 3, 6}? choose all that apply. {(3, 3), (2, 2), (3, 2), (6, 1)} {(3, 1), (6, 4), (2, 4), (6, 5)} {(0, 2), (3, 3), (5, 6)} {(3, 2), (5, 3), (2, 6), (4, 3)}