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': 'Parapharyngeal space is also known as: \nSelect and explain. \nA. Retropharyngeal space, B. Pyriform sinus, C. Lateral pharyngeal space, D. All', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The parapharyngeal space (also termed the lateral pharyngeal space), is apotential space in the head and the neck. It has clinical impoance in otolaryngology due toparapharyngeal space tumours and parapharyngeal abscess developing in this area.', 'role': 'assistant'}]