Question

Let $\rho$ be a relation defined on $\mathbb{N}$, the set of natural numbers, as
$\rho=\{(x, y) \in \mathbb{N} \times \mathbb{N}: 2 x+y=41\}$ Then
(A) $\rho$ is an equivalence relation
(B) $\rho$ is only reflexive relation
(C) $\rho$ is only symmetric relation
(D) $\rho$ is not transitive

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