Which of the Following Statements Does Not Apply to the K

Multiple Choice

Which of the following statements does not apply to the K value in the equation for the oxygen binding curve of myoglobin?

A) It is numerically equal to p₅₀.
B) It is defined as that oxygen partial pressure at which half of the oxygen binding sites are occupied.
C) It is a measure of the affinity of myoglobin for oxygen.
D) If Y > K,then myoglobin is less than 50% saturated with oxygen.
E) It is the value of pO₂ at which Y = 0.5.