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': "The X-ray view for supra orbital fissure is: \nSelect and explain. \nA. Towne's, B. Caldwell, C. AP, D. nasal", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Caldwell', 'role': 'assistant'}]