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': 'Laryngeal web most commonly involves region of: \nSelect and explain. \nA. Supraglottitis, B. Glottis, C. Subglottis, D. Both (a) and (b)', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Approximately 75% of laryngeal webs involve glottic region and are mainly situated anteriorly. Supraglottis and subglottis are involved less often. A laryngeal web is due to incomplete recanalisalion of the embryonic larynx.', 'role': 'assistant'}]