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  1. A man whose blood group is not known meet with a serious accident and needs blood transfusion immediately. Which one of the blood group mentioned below and readily available in the hospital will be safe for transfusion?

    2. A.

     O, Rh-
    B.

     O, Rh+
    C.

     AB, Rh-
    D.

     AB, Rh+

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    Answer : Option A

    Explanation :

    Donors with blood group O, Rh- can donate to recipients with blood types A, B, AB and O (O is the universal donor), because it does not have any antigen, thereby no reaction would occur with the antibody, which may be present in donor's body. Hence, option A is correct.

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