This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: X-RAYS, Subject name: Radiology
[{'content': 'Rhenium is used in which pa of X ray Tube? \nSelect and explain. \nA. Cathode, B. Anode, C. Focussing Cup, D. Filter', 'role': 'user'}, {'content': 'Answer: B \nExplanation: *Tungsten Rhenium Alloy is used as Anode in Modern X ray tube. *Nickel is used in Focussing Cup. *Aluminium is used in Filter.', 'role': 'assistant'}]