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': 'If a third molar is absent and not to be replaced \nSelect and explain. \nA. It is not considered in the classification of partial dentures, B. It may or may not be considered, C. It is considered important for classification, D. None applies', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]