A woman has a haemophilic son and three normal children. Her genotype and that of her husband with respect to this gene would be

  • A

    $X X \wedge X^{h} Y$

  • B

    $X^{h} X^{h} \wedge X^{h} Y$

  • C

    $X^{h} X^{h}$ and $X Y$

  • D

    $X^{h} X \wedge X Y$

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