2. (1 point) Let R = {($,y) : 2:,y E R}. Prove or disprove that R is reexive, symmetric or transitive if and only if: (a) (0.25 points) 1; > y (b) (0.25 points) my 2 0 (C) (0.25 points) :L'y : g (d) (0-25 points) my 2 0