This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Congenital Lesions and Stridor, Subject name: ENT
[{'content': "Thudichum's speculum is used to visualise: \nSelect and explain. \nA. Tonsils, B. Larynx, C. Anterior nasal cavity, D. Posterior nares", 'role': 'user'}, {'content': "Answer: C \nExplanation: (c) Anterior nasal cavity(Ref. Scott Brown, 8th ed., Vol 1, 978)Thudichum's speculum is used to visualise the anterior nasal cavity. This examination is known as anterior rhinoscopy.Tonsils can be visualised by depressing the tongue with a tongue depressor.Larynx can be visualised by indirect laryngoscopic mirror.Posterior nares can be visualised by post nasal mirror on posterior rhinoscopy.", 'role': 'assistant'}]