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: Surgery
[{'content': 'The most dangerous type of spread of infection from apical abscess is, to: \nSelect and explain. \nA. Infratemporal fossa, B. Pterygoid, C. Parapharyngeal space, D. Submandibular space', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]