In the disintegration series the $_{92}^{238}U\xrightarrow{\alpha }X\xrightarrow{{\beta  - }}_Z^AY$ values of $Z$ and $A$ respectively will be

  • A

    $92, 236$

  • B

    $88, 230$

  • C

    $90, 234$

  • D

    $91, 234$

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