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
Which is not a property of resin ionomer restorative material 
Select and explain. 
A. It is a dual cure polymerization system, B. It is radiolucent, C. It releases fluoride, D. It adheres to the dentin
B: It is radiolucent
Answer: B: It is radiolucent 
Explanation: None