This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pharynx, larynx and trachea and cranial nerves 3,4,6, Subject name: Anatomy
[{'content': 'Maximum AP diameter of trachea in male and female are \nSelect and explain. \nA. 27 mm and 25 mm, B. 25 mm and 23 mm, C. 25 mm and 21 mm, D. 20 mm and 15 mm', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Trachea: - Trachea is a flexible tube that extends from veebral level C6 in the lower neck to veebral level T 4 / 5 in the mediastinum where it bifurcates into a right and a left main bronchus. Measurement of trachea: - Parameters Average Minimum Maximum A - P diameter (mm) Male Female Male Female Male Female 18.82 13.25 10.15 10.72 22.92 17.25 Transverse diameter 16.30 14.92 11.02 10.57 19.98 17.22', 'role': 'assistant'}]