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': 'Intracoronal restoration resists displacement mainly by \nSelect and explain. \nA. Veneer retention, B. Wedge retention, C. Sleeve retention, D. All answers are wrong', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]