Question: Select the relation that is an equivalence relation. The domain is the set {1, 2, 3, 4}. a. { (1, 4), (4, 1), (1, 3),

Select the relation that is an equivalence relation. The domain is the set {1, 2, 3, 4}.

a. { (1, 4), (4, 1), (1, 3), (3, 1), (1, 1), (2, 2), (3, 3), (4, 4) }

b. { (1, 4), (4, 1), (1, 3), (3, 1), (2, 2) }

c. { (1, 4), (4, 1), (2, 2), (3, 3) }

d. { (1, 4), (4, 1), (1, 1), (2, 2), (3, 3), (4, 4) }

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