This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abnormalities of Development, Subject name: Pediatrics
[{'content': 'What should be used for the treatment of this child with intellectual disability? \nSelect and explain. \nA. Biotin, B. Hydroxocobalamin, C. Pyridoxine, D. Thyroxine', 'role': 'user'}, {'content': "Answer: D \nExplanation: The given picture of the child with puffy (myxedematous) facies, protruding tongue, abdominal distension, umbilical hernia and intellectual disability suggest - 'congenital hypothyroidism'. C/F of congenital hypothyroidism: Bih weight & length- usually normal Wide open anterior & posterior fontanelle Prolonged physiological jaundice Myxedematous facies Large, protruded tongue Skin- dry & scaly Hypotonia, hypothermia, hoarse cry Abdominal distension, umbilical hernia Constipation Thyroxine is used in the treatment of this disorder.", 'role': 'assistant'}]