Multiple choice

The blood group with antibody A and antibody B is

  1. O

  2. AB

  3. A

  4. B
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Blood group O individuals have both anti-A and anti-B antibodies in their plasma because they lack both A and B antigens on their red blood cells. This is why O is the universal donor but can only receive O blood. AB has neither antibody, A has anti-B, and B has anti-A.

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