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. In an emergency situation, a person with blood type A could receive
O type A blood only.
O type A or type O blood.
O type A or type AB blood.
Otype O blood only.

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Answer:

In an emergency situation, a person with blood type A could receive type A or type O blood. Blood type A has anti-B antibody in the plasma and O type blood has no antigens. The presence or absence of antigens determine the blood group of individual.