In the set A = {1, 2, 3, 4} is defined a relation R by %3D R = {(1, 1), (1, 3), (3, 4), (4, 3)}. Indicate all of the following pairs that belong to the reflexive closure of R. O (1, 1) O (1, 2) O (1, 3) O (1, 4) O (2, 1) O (2, 2) O (2, 3) о (2,4) (3, 1) (3, 2) (3, 3) о (3, 4) O (4, 1)

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