This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Radiology
[{'content': 'Radicontrast reactions are mostly: \nSelect and explain. \nA. Anaphylactoid reactions, B. IgE-Mediated reactions, C. Delayed hypersensitivity reactions, D. Immune complex mediated reactions', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. Anaphylactoid reactions', 'role': 'assistant'}]