Question

A certain road accident patient with unknown blood group needs immediate blood transfusion. His one doctor friend at once offers his blood. What was the blood group of the doctor?

• A. Blood group B
• B. Blood group AB
• C. Blood group O
• D. Blood group A

Answer 1

The correct option is C Blood group O

Blood is divided into four groups A, B, AB, and O.Blood group A takes blood only from blood group A or O, B takes blood B and O, And AB can take blood from all groups so AB is called universal recipient because it has both antigens (antigen A and antigen B), and blood group O can donate blood to any blood group because it has no any antigens either A or B antigen, but it has both antibodies A and antibody B so it is called universal donor. So the recipient's blood will not react with any antigen.

So, the correct answer is option C.