This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Larynx, Subject name: ENT
[{'content': 'Hoarseness of voice occurs early in: \nSelect and explain. \nA. Glottic carcinoma, B. Subglottic carcinoma, C. Supraglottic carcinoma, D. Equal incidence in all', 'role': 'user'}, {'content': 'Answer: A \nExplanation: (a) Glottic carcinoma(Ref. Cummings, 6th ed., 1612)Glottic carcinoma, i.e. carcinoma of the vocal cords presents early with hoarseness. In fact hoarseness is its presenting feature.Supraglottic and subglottic carcinoma can also lead to hoarseness due to later local spread to glottis.', 'role': 'assistant'}]