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': 'E-Z Gold is compacted by: \nSelect and explain. \nA. Electro mallet, B. Hand condenser, C. Pneumatic mallet, D. Hand mallet', 'role': 'user'}, {'content': 'Answer: B \nExplanation: With the exception of E-Z Gold, the compaction takes the form of malleting forces that are delivered either by a hand mallet used by the assistant or by an Electro-Mallet (McShirley Products, Glendale, CA) or a pneumatic mallet used by the dentist.\nE-Z Gold, because of its powdered form, may be compacted by heavy hand pressure delivered in a rocking motion\xa0 with specially designed hand condensers.\nSuccessful malleting of the gold foil may be achieved with any of the currently available equipment. Some operators prefer the Electro-Mallet or the pneumatic mallet because a dental assistant is not required for the procedure.\nReference: Sturdevant operative dentistry. 7th EDITION, Page No:e70', 'role': 'assistant'}]