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
Type IIa GIC is used for: 
Select and explain. 
A. Luting crowns, bridges and orthodontic brackets, B. Esthetic restorative cements, C. Reinforced restorative cements, D. Lining cements
B: Esthetic restorative cements
Answer: B: Esthetic restorative cements 
Explanation: Type I: Luting crowns, bridges, and orthodontic brackets.
Type IIa: Esthetic restorative cements.
Type IIb: Reinforced restorative cements.
Type III: Lining cements, base.
Ref: Phillip’s Science of Dental Materials ed 12 pg 320