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: ENT
[{'content': 'Most common pa of larynx involved in TB ? \nSelect and explain. \nA. Anterior, B. Posterior, C. Middle, D. Anywhere', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. is \'b\' i.e., Posterior Essential otolaryngology 2"d/e p. 1139] Disease affects the posterior third of larynx more commonly than anterior pa. The pas affected in descending order of frequency are :- i) Interarytenoid fold, ii) Ventricular band, iii) Vocal cords, iv) Epiglottis.', 'role': 'assistant'}]