Which of the following is NOT a true statement regarding blood?

A)The normal average temperature of blood is around 100.4^o F.
B)The normal pH range for blood is 7.35-7.45.
C)Hemocytoblasts are a common component of circulating blood.
D)The primary circulating blood cell is the RBC.
E)Blood is a liquid connective tissue consisting of cells and a liquid extracellular matrix.