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': 'Impaired "anticipatory posture" is seen in \nSelect and explain. \nA. Erb\'s palsy, B. Autism, C. ADHD, D. Oppositional defiant disorder', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Posture that a child assumes when he wants to get\xa0picked up is termed as anticipatory posture. Autism is characterized by poor parental attachment ,eye contact\xa0and absence of anticipatory posture.', 'role': 'assistant'}]