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: Dental
[{'content': "Causes of asymmetrical Moro's reflex? \nSelect and explain. \nA. Fracture of clavicles, B. Fracture of humerus, C. Erb's palsy, D. All of the above", 'role': 'user'}, {'content': "Answer: D \nExplanation: The Moro reflex is an infantile reflex that develops between 28–32 weeks of gestation and disappears between 2-3 months of age. It is a response to a sudden loss of support and involves three distinct components: spreading out the arms (abduction) pulling the arms in (adduction) and startled look.\n*Asymmetrical moro's reflex: still present at 6 months\n\xa0Causes:\xa0\n\nFracture of clavicles\nFracture of humerus\nErb's palsy", 'role': 'assistant'}]