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': 'True about Rest is: \nSelect and explain. \nA. Provides vertical support, B. Should always be located on properly prepared tooth surface, C. Rest are designated by the surface of the tooth prepared to receive them, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Any component of a partial denture on a tooth surface, that provides vertical support is called rest.\nRests should always be located on properly prepared tooth\xa0surfaces.\xa0\nThe\xa0prepared\xa0surface\xa0of\xa0an\xa0abutment\xa0to receive the rest is called the rest seat.\nRests are designated by the surface of the tooth, prepared to receive them (occlusal rest, lingual rest, and incisal rest).', 'role': 'assistant'}]