your Question is unclear.
Answer:
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Explanation:
Rhesus (Rh) factor is an inherited protein found on the surface of red blood cells. If your blood has the protein, you're Rh positive. If your blood lacks the protein, you're Rh negative. Rh positive is the most common blood type.
I think its 2, but I'm not sure. I have the same question on my homework, but I don't know. I'm 82% sure its A.
Hope this helps:)