Let A = {4, 5, 6} and B = {6, 7, 8} and let S be the "divides" relation from A to B. That is, for every ordered pair  (x, y)  A ✕ B, x S y ⇔ x|y. Using set-roster notation, state explicitly which ordered pairs are in S and  S−1.  (Enter your answers as comma-separated lists of ordered pairs.)

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