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: Unknown
[{'content': 'Pituitary secretes all hormones except ? \nSelect and explain. \nA. GH, B. Prolactin, C. Oxytocin, D. Thyroxine', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Thyroxine", 'role': 'assistant'}]