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
Sandwich technique consists of: 
Select and explain. 
A. GIC and composite, B. Amalgam and GIC, C. Amalgam and composite, D. None of the above
A: GIC and composite
Answer: A: GIC and composite 
Explanation: None