Test Academy | (a1, a2) ∈R implies that (a2, a1) ∈ R, for all a1, a2∈A. This condition is for which of the following relations? Equivalence relation, Reflexive relation, Symmetric relation, Universal relation

Question

(a1, a2) ∈R implies that (a2, a1) ∈ R, for all a1, a2∈A. This condition is for which of the following relations?

Options :