A sample of blood shows clumping with antiserum A but not with antiserum B. The blood group would be
A
O
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B
A
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C
B
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D
AB.
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Solution
The correct option is B A
Clumping with antiserum A means the blood sample contains antigen A and no clumping with antiserum B indicates the presence of anti B antibody in blood sample. This correlates to blood group A.