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 component of a removable partial denture used to retain or prevent dislodgement? 
Select and explain. 
A. Indirect retainer, B. Rest, C. Minor connector, D. Direct retainer
D: Direct retainer
Answer: D: Direct retainer 
Explanation: None