if blood is in short supply, which blood type would be the most beneficial to have on hand if someone needed…

if blood is in short supply, which blood type would be the most beneficial to have on hand if someone needed a blood transfusion? o+ o- ab+ ab-
Answer
Brief Explanations:
O - blood type is known as the universal donor. It can be transfused to people with any blood - type (A, B, AB, O) and positive or negative Rh factor. So when blood is in short supply, having O - on hand is most beneficial for transfusions as it can be used for the widest range of patients.
Answer:
O -