This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Genetic and genetic disorders, Subject name: Pediatrics
[{'content': 'Which one of the following is a distinguishing feature of Edward&;s syndrome \nSelect and explain. \nA. Hypotonia, B. Hypotelorism, C. Holoprosencephaly, D. Rocker bottom feet', 'role': 'user'}, {'content': 'Answer: D \nExplanation: ), Edwards syndrome ( Reference: GHAI Essential pediatrics, 8th edition', 'role': 'assistant'}]