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
Processing method among the following is/are: 
Select and explain. 
A. Manual method, B. Monobath, C. Digital processing, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: Various processing methods are:

Manual
Automatic
Monobath
Digital processing
Self developing