$A$ relation $R$ is defined from $\{2, 3, 4, 5\}$ to $\{3, 6, 7, 10\}$ by $xRy \iff x$ is relatively prime to $y$. Then the domain of $R$ is

  • A
    $\{2, 3, 5\}$
  • B
    $\{3, 5\}$
  • C
    $\{2, 3, 4\}$
  • D
    $\{2, 3, 4, 5\}$

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