If the electronic configuration of $M^{3+}$ is $[Xe] \ 4f^3$,then $M^{3+}$ is

  • A
    $Nd^{3+}$
  • B
    $Pr^{3+}$
  • C
    $Sm^{3+}$
  • D
    $Dy^{3+}$

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