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UP POLICE SIUP POLICE SI Hard Mock Set 3Hard GK

UP POLICE SI Mock Test Set 3, Q39: Identify the correct answer for universal donor blood group in basic ABO-Rh system.

A. A positive
B. B negative
C. O negative
D. AB positive
Correct Answer: C. O negative
Explanation: O negative is commonly called universal donor. Category: UP POLICE SI. Set: 3.
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