Let R be a relation from A = {1, 2, 3, 4} to B = {1, 3, 5} such thatR = {(a, b) : a < b, where a ∈ A and b ∈ B}.What is RoR-1 equal to?

{(1, 3), (1, 5), (2, 3), (2, 5), (3, 5), (4, 5)}

{(3, 1), (5, 1), (3, 2), (5, 2), (5, 3), (5, 4)}

{(3, 3), (3, 5), (5, 3), (5, 5)}

Let R be a relation from A = {1, 2, 3, 4} to B = {1, 3, 5} such thatR

1.	Let R be a relation from A = {1, 2, 3, 4} to B = {1, 3, 5} such thatR = {(a, b) : a < b, where a ∈ A and b ∈ B}.What is RoR-1 equal to?
A.	{(1, 3), (1, 5), (2, 3), (2, 5), (3, 5), (4, 5)}
B.	{(3, 1), (5, 1), (3, 2), (5, 2), (5, 3), (5, 4)}
C.	{(3, 3), (3, 5), (5, 3), (5, 5)}
D.	{(3, 3), (3, 4), (4, 5)}
Answer» D. {(3, 3), (3, 4), (4, 5)}

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