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: Pathology
[{'content': "Break up time (BUT) test is done in \nSelect and explain. \nA. Sjogren's syndrome, B. Multiple sclerosis, C. SLE, D. Myasthenia gravis", 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]