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: Gynaecology & Obstetrics
[{'content': 'Prolactin - releasing factors include all except \nSelect and explain. \nA. Vasopressin, B. Vasoactive intestinal peptide, C. Dopamine, D. Acetylcholine', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Prolactin-release is regulated mainly by inhibition, specifically by dopamine.', 'role': 'assistant'}]