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': "True about Down's syndrome – a)  Hypertoniab)  Simian creasec)  Lymphedemad)  Mongoloid slant \nSelect and explain. \nA. bc, B. ad, C. ab, D. bd", 'role': 'user'}, {'content': 'Answer: D \nExplanation: Upward sloping palpebral fissure is known as mangoloid slant.', 'role': 'assistant'}]