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': 'Pure gold has a density of 19.3 g/cm3. The apparent density of the direct filling gold restoration after condensation is most often: \nSelect and explain. \nA. Equal to 19.3 g/cm3, B. More than 19.3 g/cm3, C. Less than 19.3 g/cm3, D. Can be more or less than 19.3 g/cm3', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The\xa0maximal\xa0density\xa0of\xa0gold is\xa019.3\xa0g/cm3. The\xa0density values shown in Table indicates the presence of voids in all direct gold restorations. Apparently, voids are inevitable, but they should be kept to a minimum to achieve the maximal strength attainable.', 'role': 'assistant'}]