Whаt effect wоuld upper аirwаy оbstructiоn have on ventilation-perfusion ratio, PAO2 and PACO2? A. The V/Q ratio and PACO2 will decrease and PAO2 will increase. B. The V/Q ratio and PAO2 will decrease and PACO2 will increase. C. The V/Q ratio and PAO2 will increase and PACO2 will decrease. D. The V/Q ratio and PACO2 will increase and PAO2 will decrease.