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': 'Colloidal osmotic pressure of plasma is by \nSelect and explain. \nA. Albumin, B. Fibrinogen, C. Globulin, D. Prothrombin', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]