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: Dental
[{'content': 'Which among the following statements is true regarding posts in Endodontics \nSelect and explain. \nA. They strengthen the tooth structure, B. Provide retention for the core, C. They stabilize a periodontally compromised tooth, D. Posts preserve the remaining tooth structure', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]