A person’s blood group is determined by antigens present on the red blood cells. Antibodies in the plasma of the person who receives the blood can make some blood transfusions unsafe.
The table shows the antigens and antibodies in the blood of people with different blood groups.
Which blood groups can be given to a person with blood group A?

1 )
A and AB
A and O
3 )
B and O
4 )
AB only
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