1. Verify that the relation ~ is an equivalence relation on the set S given. (a) S = R reals, a ~ b if a - b is rational. (b) S = C, the complex numbers, ab if |a| = |b|. (c) S = straight lines in the plane, a ~ b if a, b are parallel. (d) s = set of all people, a ~ b if they have the same color eyes.

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A: Two sets A and B are equal if A and B  have the same elements.

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A: Set A={1,2,3,4,5,6}

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