A man with blood group ‘A’ marries a woman with blood

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A man with blood group ‘A’ marries a woman with blood group ‘B’. What are all the possible blood groups of their offsprings?

1. A,B and AB only
2. A,B,AB and O
3. O only
4. A and B only

Correct Option: B

The possibility of resultant blood group may be A, B, AB and O.