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': 'Pulp chambers and root canals in deciduous teeth: \nSelect and explain. \nA. Wide and deep, B. Shallow and narrow, C. Wide and narrow, D. Shallow and wide', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]