Consider the following statements : I. Blood of 'A' group has anti-B antibodies in plasma. II. Blood of 'AB' group has both 'A' and 'B' antigens in RBCs. III. Blood of 'AB' group can be given to a person having 'A' blood group. IV. Blood of 'O' group does not possess any antibody in plasma. Which of the statements given above are correct?
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