This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: CNS Tumors, Subject name: Surgery
[{'content': 'A six year old child managed by complete surgical removal of Craniopharyngioma developed multiple endocrinopathies. Which of following hormones should be replaced first? \nSelect and explain. \nA. Hydrocoisone, B. Growth hormone, C. Thyroxine, D. Prolactin', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Coisol (hydrocoisone) is the first hormone to be replaced in patients with panhypopituitarism after craniopharyngioma surgery.', 'role': 'assistant'}]