Answer:
A person with type O could't have a baby AB
Step-by-step explanation:
O with O = child can only be of type O. It will never be A, B, or AB.
O with A = child can be of types O and A. It will never be B or AB.
O with AB = child can be A or B. It will never be O or AB.
O with B = child can be of type O and B. It will never be A or AB.