This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Plain Film Radiography, Fluoroscopy, and Tomosynthesis, Subject name: Radiology
[{'content': 'Target element used in mammography is? \nSelect and explain. \nA. Copper, B. Tungsten, C. Molybdenum, D. Aluminum', 'role': 'user'}, {'content': 'Answer: C \nExplanation: ANSWER: (C) MolybdenumREF: Sutton\'s Radiology 7th edition, volume 2, page 1451"The most commonly used target-filter combination is a molybdenum (Mo) target with 0.03 mm Mo filter"', 'role': 'assistant'}]