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': "Microcephaly is seen in \nSelect and explain. \nA. Autistic disorder, B. Heller's disease, C. Rett's disease, D. Asperger's syndrome", 'role': 'user'}, {'content': "Answer: C \nExplanation: 3'M' s of Rett's disease :\n\nMahila (F > M).\nMicrocephaly.\nMECP2.", 'role': 'assistant'}]