Let R be a relation on the set A = {1, 2, 3}, such that R = {(1,1), (2,2), (3,3), (1,2)}. Now consider the following relations.
I. {(1,1), (2,2), (3,3)}
II. {(1,1), (2,2)}
III. {(1,1), (2,2), (3,3), (1,2)}
Which of the above correctly represent(s) the reflexive closure of R?