Select ALL the relations that are functions.

Question 5 options:

{(2, 2),(4, 4),(6, 6),(8, 8)}


{(1, 2),(3, 3),(4, 8),(6, 3)}


{(0, 3),(3, 5),(5, 6),(8, 4)}


{(3, 4),(5, 2),(5, 6),(7, 3)}