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
For better osseo integration modifications on implant surfaces include 
Select and explain. 
A. Sandbasting with Aluminum oxide, B. Etching with Phosphoric acid, C. Plasma sprayed Titamum, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: None