In the equation ${ }_{13}^{27} Al +{ }_2^4 He \longrightarrow{ }_{15}^{30} P + X ,$ The correct symbol for $X$ is

  • A

    ${ }_{-1}^0 e$

  • B

    ${ }_1^1 H$

  • C

    ${ }_2^4 He$

  • D

    ${ }_0^1 n$

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