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': "Regarding Rett's syndrome false is \nSelect and explain. \nA. Microcephaly at birth, B. X - linked, C. Poor social interaction, D. Stereotypical hand movements", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Head circumference is normal at birth. It starts to regress later.', 'role': 'assistant'}]