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': 'Occlusal fossa of the primary crown is \nSelect and explain. \nA. shallower than the permanent, B. deeper than the permanent, C. same as permanent, D. can be 1 or 2.', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Since the thickness of the covering of pulp(enamel and dentin) is less in primary crown, then fossa will be shallower.\nPULP\n(PULP CHAMBER ANATOMY IN BOTH PRIMARY AND PERMANENT TEETH CLOSELY APPROXIMATES THE SURFACE SHAPE OF THE CROWN)', 'role': 'assistant'}]