JEE Main 2021 Mathematics question

Let R = {(P, Q) | P and Q are at the same distance from the origin} be a relation, then the equivalence class of (1,–1) is the set :

• (A)S = {(x,y) | }
• (B)S = {(x,y) | }
• (C)S = {(x,y) | = }
• (D)S = {(x,y) | }Correct