This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nose and paranasal sinuses, Subject name: ENT
[{'content': 'True statement about the external nose is \nSelect and explain. \nA. Upper 2/3 is bony, B. Lower 1/3 is cailaginous, C. Single lateral cailage, D. Two nasal bones', 'role': 'user'}, {'content': 'Answer: D \nExplanation: External nose has an osteocailaginous framework of which upper one-third is bony and lower two-thirds is cailaginous. Bony pa- Consists of two nasal bones Cailaginous pa: - Consists of two upper lateral cailages, two lower lateral cailages, two or more lesser alar (or sesmoid) cailages anda septal cailage. So, there are 3 paired and 1 unpaired cailages. Ref: PL Dhingra, Diseases of Ear, Nose & Throat, 7th edition, pg no. 149', 'role': 'assistant'}]