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': 'Bronchography may be dangerous if a patient with: \nSelect and explain. \nA. Emphysema, B. Bronchiectasis, C. Iodine sensitivity, D. All of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. Iodine sensitivity', 'role': 'assistant'}]