Chapter 16, Problem 6RA

Which of these would be most affected by a decrease in the affinity of hemoglobin for oxygen?

$\begin{array}{l}\begin{array}{l}\text{a}{\text{. Arterial Po}}_{\text{2}}\hfill \\ \text{b}\text{. Arterial percent oxyhemoglobin saturation}\hfill \\ \text{c}\text{. Venous oxyhemoglobin saturation}\hfill \end{array}\\ \text{d}{\text{. Arterial Pco}}_2\end{array}$