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: Dental
[{'content': 'Self Adjusting Files \nSelect and explain. \nA. Belong to Group 4 of ISO classification for instruments, B. No rotation movement only Up and Down movement in this file occurs, C. Used with special irrigation device known as VATEA, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]