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: Psychiatry
[{'content': "Rett's disease is caused by abnormality in __________ \nSelect and explain. \nA. ATRY, B. HLADRB1, C. MECP2, D. PTEN", 'role': 'user'}, {'content': "Answer: C \nExplanation: 3 'M's\xa0of Rett's disease :\n\nMahila (F>M).\nMicrocephaly.\nMECP2.", 'role': 'assistant'}]