-The Shift from Curve a to Curve B Is Associated $\mathrm{P}_{50}$

Multiple Choice

-The shift from curve A to curve B is associated with

A) decreased $\mathrm{P}_{50}$
B) decreased affinity of hemoglobin for $\mathrm{O}_{2}$
C) decreased $\mathrm{O}_{2}$ -carrying capacity of hemoglobin
D) increased ability to unload $\mathrm{O}_{2}$ in the tissues