This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: miscellaneous, Subject name: Biochemistry
[{'content': 'In the upright position, from apex to base of the lung \nSelect and explain. \nA. Ventilation decreases, perfusion decreases, B. Ventilation decreases, perfusion increases, C. Ventilation increases, perfusion increases, D. Ventilation increases, perfusion decreases', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ventilation, as well as perfusion in the upright position, declines in a linear fashion from the bases to the apices of the lungs.', 'role': 'assistant'}]