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': 'A child presents with complaints of pain in neck and right shoulder with restricted range of motion. What is the diagnosis? \nSelect and explain. \nA. Klippel Feil syndrome, B. Facioscapulohumeral dystrophy, C. Long thoracic nerve injury, D. None of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Facioscapulohumeral dystrophy\n\nIt involves weakness of facial and shoulder muscles. (scapular winging)\nThere is flattening of deltoid contour, with wasted biceps and triceps muscle.', 'role': 'assistant'}]