Three children in a family have blood types $O$, $AB$ and $B$ respectively. What are the genotypes of their parents?

  • [AIIMS 2013]
  • A

    $I^A i$ and $I^Bi$

  • B

    $I^AI^B$ and $i\, i$

  • C

    $I^BI^B$ and $I^AI^A$

  • D

    $I^AI^A$ and $I^Bi$

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