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
On the interaction of X-ray with matter; Phenomenon occurring maximally is: 
Select and explain. 
A. Compton scattering, B. Photoelectric emission, C. Coherent Scattering, D. None of the above
A: Compton scattering
Answer: A: Compton scattering 
Explanation: None