The relation $R$ in the set $A$ of points in a plane given by $R = \{(P, Q)$ : distance of the point $P$ from the origin is same as the distance of the point $Q$ from the origin $\}$, is <br> a) Reflexive only<br> b) Symmetry<br> C) both reflexive and symmetry but not transitive<br> d) Is an equivalence relation.<br> Also show that the set of all points related to a point Pis not equal to (0,0) is the circle passing through P with origin as centre.

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