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: Medicine
[{'content': "Sulphasalazine is NOT used for the treatment of \nSelect and explain. \nA. Crohn's disease, B. Rheumatoid arthritis, C. Sarcoidosis, D. Ulcerative colitis", 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]