This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
[{'content': "All of the following are autoimmune disease except? \nSelect and explain. \nA. SLE, B. Grave's disease, C. Myasthenia gravis, D. Sickle cell disease", 'role': 'user'}, {'content': 'Answer: D \nExplanation: Robbins basic pathology 6th edition. Chapter Red cells and bleeding disorders. page no. 611.. sickle cell disease is a hereditary hemoglobinopathy, occuring due to mutation in beta globin chain. while all others are autoimmne diseases. so, answer is option 4.', 'role': 'assistant'}]