The Effect of High 2,3-BPG in Red Blood Cells Is

The effect of high 2,3-BPG in red blood cells is:

A) To maintain the reducing environment and prevent methemoglobin formation.
B) To facilitate tetramer formation from α and β subunit monomers.
C) To increase the P50 of hemoglobin.
D) To convert the oxygen saturation curve of hemoglobin from sigmoid to hyperbolic.
E) To increase the rate of conversion of the T to the R form.