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': 'Best marginal integrity is obtained with \nSelect and explain. \nA. GIC, B. Gold foil, C. Gold Inlay, D. Amalgam', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]