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: Orthopaedics
[{'content': 'In klippel - Fell syndrome, the patient has all of the following clinical features except - \nSelect and explain. \nA. Low hair line, B. Bilateral Neck webbing, C. Bilateral shortness of steronomastoid muscles, D. Gross limitations of neck movements', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Bilateral shortness of sternomastoid has not been mentioned as a feature of Klippel-Feil syndrome.', 'role': 'assistant'}]