Which relations are functions and which are not functions? Column A Column B 1. { (2, 2), (4, 4), (6, 6), (8, 8) } 2. { (0, 3), (3, 5), (5, 6), (8, 4) } 3. { (1, 2), (3, 3), (4, 8), (6, 3) } 4. { (3, 4), (5, 2), (5, 6), (7, 3) } A. function B.
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