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
Atraumatic Restorative Treatment (ART) technique utilises 
Select and explain. 
A. Glass ionomer cement, B. Composite resin, C. Silver amalgam, D. Reinforced zinc oxide eugenol cement
A: Glass ionomer cement
Answer: A: Glass ionomer cement 
Explanation: None