All of the Following Statements About the Conversion of Hemoglobin

Multiple Choice

All of the following statements about the conversion of hemoglobin from taut to relaxed forms are correct, EXCEPT

A) additional inter-subunit salt bridges are formed.
B) affinity for molecular oxygen increases.
C) the subunits move relative to one another.
D) BPG is excluded from the central cavity of the molecule.
E) affinity for carbon dioxide decreases.