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': 'A periapical abscess of a mandibular second molar space spreads most commonly to the \nSelect and explain. \nA. Submandibular space, B. Temporal space, C. Sublingual space, D. Infra temporal space', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]