Q. Universal donor is

A) $O\ Rh^{+}$
B) $O\ Rh^{-}$
C) $AB\ Rh^{+}$
D) $AB\ Rh^{-}$
Explanation

The correct answer is Option A: $O\ Rh^{+}$.

A detailed explanation for this question is being prepared.

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.