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
Internal occlusal rest provided in partial denture does not provide: 
Select and explain. 
A. Horizontal stabilization, B. Retention, C. Vertical stop, D. Occlusal support
B: Retention
Answer: B: Retention 
Explanation: None