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 donor ?
(1) Blood group A (2) Blood group B (3) Blood group AB (4) Blood group O
doctor friend at once offers his blood. What was the blood group of the donor ?
(1) Blood group A (2) Blood group B (3) Blood group AB (4) Blood group O