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
[{'content': 'Which component of a removable partial denture used to retain or prevent dislodgement? \nSelect and explain. \nA. Indirect retainer, B. Rest, C. Minor connector, D. Direct retainer', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]