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: Surgery
[{'content': 'All of the following statements are true about development dysplasia (DDH) of the hip, EXCEPT: \nSelect and explain. \nA. It is more common in females, B. Oligohydramnios is associated with a higher risk of DDH, C. The hourglass appearance of the capsule may prevent a successful closed reduction, D. Twin pregnancy is a known risk factor', 'role': 'user'}, {'content': "Answer: D \nExplanation: Twin pregnancy has not been mentioned as a risk factor for developmental dysplasia of hip. All other statements in relation to DDH are true. Ref: Tochdjian's Paediatric Ohopaedics, 3rdd Edtion, Pages 514, 516, 520.", 'role': 'assistant'}]