In the ABO system, blood group ‘O’ is characterized by the

Q. In the ABO system, blood group ‘O’ is characterized by the:

A.            presence of antigen O

B.            presence of both antigen A and antigen B

C.            absence of both antigen A and antigen B

D.            presence of antigen A and absence of antigen B

Answer: absence of both antigen A and antigen B