Question

Donor X and recipient Y belong to same blood group. Transfusion has led to RBC agglutination because

• A. X is $R{h}^{+}$, Y is $R{h}^{-}$
• B. X is $R{h}^{-}$, Y is $R{h}^{+}$
• C. Both are $R{h}^{+}$
• D. Both are $R{h}^{-}$.

Answer 1

The correct option is A X is $R{h}^{+}$, Y is $R{h}^{-}$

Rh positive donor if transfuses blood to Rh negative recipient, then it can cause agglutination due to formation of Rh antibodies .

So, the correct option is A.