This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Pediatrics
[{'content': 'Features of hypothyroidism in infancy include the following except \nSelect and explain. \nA. Premature closure of posterior fontanelle, B. Coarse facies, C. Umbilical hernia, D. Constipation', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Hypothyroidism characterized by wide open ( delayed closure) of posterior fontanelle,umbilical hernia,large head,coarse facies,constipation. Reference : Ghai essential of pediatrics, eighth edition, p.no:517,table 17.6.', 'role': 'assistant'}]