This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fundamentals In Radiology, Subject name: Radiology
[{'content': 'Which of the following is not ionizing: \nSelect and explain. \nA. Beta radiation, B. Alpha radiation, C. Gamma radiation, D. UV radiation', 'role': 'user'}, {'content': 'Answer: D \nExplanation: d) uv radiation ref: SPM Park 17th/e p.521, principal and practice of oncology 6th/e p. 195-196', 'role': 'assistant'}]