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': "In anterior maxillary occlusal projection, the central ray of the X-ray beam enters the patient's face through the: \nSelect and explain. \nA. Tip of the chin, B. Tip of the nose, C. Bridge of the nose, D. Glabella", 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]