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': 'Gonadotropins are : \nSelect and explain. \nA. Proteins, B. Glycoproteins, C. Phospholipids, D. Polysaccharides', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Glycoproteins', 'role': 'assistant'}]