This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Peptic Ulcer Disease, Subject name: Medicine
[{'content': 'Which of the following staging is used for GERD? \nSelect and explain. \nA. Ranson, B. Gleason, C. Savary miller, D. Hunter scale', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Staging Ranson- Acute pancreatitis Gleason- Cancer of Prostate Savary miller- GERD Hunter Scale- SAH severity', 'role': 'assistant'}]