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': 'The main components in silicophosphate cement: \nSelect and explain. \nA. Zinc phosphate and GIC, B. Silicate and GIC, C. ZOE and Silicate, D. Zinc phosphate and Silicate', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]