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: Pharmacology
[{'content': 'Long term use of aspirin in rheumatoid arthritis is limited by its propensity to cause : \nSelect and explain. \nA. Metabolic acidosis, B. Hypersensitivity reactions, C. Gastric mucosal damage, D. Salicylism', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]