Multiple choice general knowledge science & technology

What is the least common blood type?

  1. None of the Below

  2. O +

  3. AB

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

AB negative is the rarest blood type globally, but among the broad ABO groups, AB is the least common. O+ is actually the most common, making it a distractor. AB individuals have both A and B antigens, which occurs less frequently in the population than other combinations.

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