This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Genetics And Genetic Disorders, Subject name: Pediatrics
[{'content': 'The following clinical features are seen in which disease? \nSelect and explain. \nA. Turner syndrome, B. Fragile X-syndrome, C. Achondroplasia, D. Down syndrome', 'role': 'user'}, {'content': 'Answer: D \nExplanation: d. Down syndromeA - Mongoloid slant, epicanthic foldB - Single transverse palmar (simian) creaseC - Sandle gapAll these are seen in Down syndrome', 'role': 'assistant'}]