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': 'The maxillary 1st premolar will typically demonstrate which type of pulpal configuration: \nSelect and explain. \nA. DOUBLE root with 2 root canals., B. SINGLE root with 2 root canals., C. Any of the above., D. None.', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]