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: Biochemistry
[{'content': 'Which is/are not transpo protein (s): \nSelect and explain. \nA. Transferrin, B. Collagen, C. Ceruloplasmin, D. Hemoglobin', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. CollagenAlbumin, ceruloplasmin, transferrinn and hemoglobin are transpo proteins whereas collagen is a structural protein.', 'role': 'assistant'}]