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': 'Not true about Edward syndrome \nSelect and explain. \nA. VSD is the most common congenital heart defect, B. Rockerbottom foot, C. Respiratory failure, D. Normal IQ', 'role': 'user'}, {'content': 'Answer: D \nExplanation: intellectual disability is a feature of Edward syndrome.', 'role': 'assistant'}]