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
The main components in silicophosphate cement: 
Select and explain. 
A. Zinc phosphate and GIC, B. Silicate and GIC, C. ZOE and Silicate, D. Zinc phosphate and Silicate
D: Zinc phosphate and Silicate
Answer: D: Zinc phosphate and Silicate 
Explanation: None