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 physical properties of  the compacted  gold(restoration) are probably more greatly influenced by: \nSelect and explain. \nA. Competence of the dentist in manipulating and placing the gold material, B. Hardness of the gold used for filling the prepared cavity, C. Physical properties of various types of gold used for filling the prepared cavity, D. None of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: There is no evidence that the diﬀerences in physical properties among the various forms of gold are clinically signiﬁcant. The physical properties of the compacted gold (restoration) are probably more greatly inﬂuenced by the competence of the dentist in manipulating and placing the gold material.\n\xa0\nRef:\xa0 \xa0Phillip’s Science of Dental Materials ed 12 pg 414', 'role': 'assistant'}]