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: Medicine
[{'content': 'Middle aged female with mass in sellaturcica hormone increased is- \nSelect and explain. \nA. Prolactin, B. Thyroxine, C. Extrogen, D. ADH', 'role': 'user'}, {'content': 'Answer: A \nExplanation: hypopituitarism occurs as prolactin has an inhibitory effect from normal pituitary resulting in increased prolactin level( Harrison 17 pg2199)', 'role': 'assistant'}]