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: Medicine
[{'content': 'Most common presenting feature of adult hypopituitarism is \nSelect and explain. \nA. Hypothyroidism, B. Hypogonadism, C. Addison’s disease, D. Hyperprolactinemia', 'role': 'user'}, {'content': 'Answer: B \nExplanation: In adults decreased pituitary function is first shown by hypogonadism.', 'role': 'assistant'}]