Take x=0.5: 0.5≤0.25 is false, so not reflexive. Take (2,3): 2≤9 true but 3≤4 true; check (0.5,1): 0.5≤1 true, (1,0.5): 1≤0.25 false, not symmetric. (2,−3)∈R: 2≤9, (−3,1): −3≤1, but (2,1): 2≤1 false, not transitive. So neither reflexive nor symmetric (B), and neither reflexive nor transitive (C).