This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gas Transport, Subject name: Physiology
[{'content': 'Carbon dioxide trasported in blood mostly as - \nSelect and explain. \nA. CarboxyHb, B. In combination with plasma proteins, C. Bicarbonate, D. Carbonic acid dissolved in plasma', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Dissolution, hemoglobin binding, and the bicarbonate buffer system are ways in which carbon dioxide is transported throughout the body. In the bicarbonate buffer system, the most common form of carbon dioxide transportation in the blood, carbon dioxide is finally expelled from the body through the lungs during exhalation.', 'role': 'assistant'}]