This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Radiotherapy Pa 2, Subject name: Radiology
[{'content': 'Radioisotopes produce all the following except? \nSelect and explain. \nA. Alpha rays, B. Beta Rays, C. X rays, D. Gamma Rays', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Radioactive elements emit Alpha Rays, Beta and Gamma Rays. X-rays are produced when fast moving electrons from cathode strike the target of Anode of Xray Tube.', 'role': 'assistant'}]