The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Which of the following is not a feature of anaphylaxis?   (A) Delayed reaction   (B) Immediate reaction   (C) Passive transfer by serum   (D) None of the above
['(A) Delayed reaction <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Delayed reaction \n (B) Immediate reaction \n (C) Passive transfer by serum \n (D) None of the above <> possible answers', '  Which of the following is not a feature of anaphylaxis? <> context@']