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
Bragg's peak is exhibited by 
Select and explain. 
A. Proton, B. Electron, C. Neutron, D. All the above
A: Proton
Answer: A: Proton 
Explanation: Bragg curve plots the energy loss of ionizing radiation during its travel through matter.
Bragg peak is seen in proton.