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
Bronchography may be dangerous if a patient with: 
Select and explain. 
A. Emphysema, B. Bronchiectasis, C. Iodine sensitivity, D. All of the above
C: Iodine sensitivity
Answer: C: Iodine sensitivity 
Explanation: Ans. Iodine sensitivity