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: Radiology
[{'content': "Bragg's peak is exhibited by \nSelect and explain. \nA. Proton, B. Electron, C. Neutron, D. All the above", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Bragg curve plots the energy loss of ionizing radiation during its travel through matter.\nBragg peak is seen in proton.', 'role': 'assistant'}]