Which of the following statements is incorrect? (a) A person of ' \( O \) ' blood group has anti...

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Which of the following statements is incorrect?
(a) A person of ' \( O \) ' blood group has anti ' \( A \) ' and anti ' \( B \) ' antibodies in his blood plasma.
(b) A person of ' \( B \) ' blood group can't donate blood to a person of ' \( A \) ' blood group.
(c) Blood group is designated on the basis of the presence of antibodies in the blood plasma.
(d) A person of AB blood group is universal recipient.
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