Which of These Is Demonstrated by the Oxygen-Hemoglobin Dissociation Curve

Which of these is demonstrated by the oxygen-hemoglobin dissociation curve?

A) The greater the PO₂ of the blood,the greater the dissociation of O₂ from hemoglobin.
B) At normal resting systemic arterial PO₂,hemoglobin is almost 100% saturated with oxygen.
C) At normal resting systemic venous PO₂,only about 75% of the hemoglobin is in the form of deoxyhemoglobin.
D) More additional oxygen binds to hemoglobin when going from a PO₂ of 60 to 100 mmHg,than is added when going from a PO₂ of 40 to 60 mmHg.
E) As PO₂ increases,the saturation of hemoglobin with oxygen increases linearly.