Which of the following represents the reflexive transitive closure of R = {(x,…

1. A.

   R = {(x, y) | y > x and x, y ∈ N}

2. B.

   R = {(x, y) | y = x + 1 or y = x and x, y ∈ N}

3. C.

   R = {(x, y) | y < x and x, y ∈ N}

4. D.

   R = {(x, y) | y ≥ x and x, y ∈ N}

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