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: Surgery
[{'content': 'About 6 - 8 hours after peptic perforation the disappearance of abdominal wall rigidity is due to - \nSelect and explain. \nA. Cessation of acid secretion in the stomach, B. Revival from initial shock, C. Dilution of acid in the peritonial cavity, D. Fatigue of reflex arc.', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]