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': 'Gonadotrophin is a : \nSelect and explain. \nA. Steroid, B. Lipoprotien, C. Polypeptide, D. Glycoprotien', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Glycoprotien', 'role': 'assistant'}]