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': 'Not seen in Marfans syndrome \nSelect and explain. \nA. Scoliosis, B. Hyperlaxity, C. Pes planus, D. Hypospadias.', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]