This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Circulation: Biophysics of Pressure, Flow, and Resistance, Subject name: Physiology
[{'content': 'Which maintains oncotic pressure - \nSelect and explain. \nA. Globulin, B. Albumin, C. Fibrin, D. Na+', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Albumin o Oncotic pressure, also called colloid osmotic pressure, is a form of osmotic pressure exerted by proteins in blood plasma that usually tends to pull the water into the circulatory system. The major contributing protein for plasma oncotic pressure is albumin.", 'role': 'assistant'}]