Three children in a family have blood ty...

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

`I^A I^B and ii`

`I_(i)^(A) and I_(i)^(B)`

`I^A I^A and I_(i)^(B)`

`I^B I^B and I^A I^A`

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The correct Answer is:

`I_(i)^(A) and I_(i)^(B)`

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