Answer:
n the United States, the most common blood type is O, followed closely by type A. If you have type O blood, you can only get type O red blood cell transfusions. But you can give your red blood cells to people with type A, B, AB, or O blood, which is why you are sometimes called a universal donor.
A negative: B negative
A positive: B positive
Explanation:
Answer:
O negative (O-)
Explanation:
It's the universal blood type
