If $x \mathbin{R} y$ means "$x$ is related to $y$ under $R$", then $(x, y)$—

Question

Accepted Answer

belongs to $R$

Answer

does not belong to $R$

Answer

equals $R$

Answer

belongs to $A$ only

If xRyx \mathbin{R} yxRy means "xxx is related to yyy under RRR", then (x,y)(x, y)(x,y)—