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: Pediatrics
[{'content': "Atypical moro's reflex is seen in A/E - \nSelect and explain. \nA. clavicle, B. Sternomastoid tumor, C. Shoulder dislocation, D. Brachial plexus injury", 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Sternomastoid tumour", 'role': 'assistant'}]