Which blood group is known as the 'Universal Donor'? MCQ with Answer and Explanation

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Which blood group is known as the 'Universal Donor'?

A. O-

B. AB+

C. A+

D. B-

Answer: Option A

Solution (By JKSSB Mock Tests)

O-negative blood lacks A, B, and Rh antigens, making it the universal donor.

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