Which of the Following Statements About Factors Involved in the Formation

Multiple Choice

Which of the following statements about factors involved in the formation of blood cells is FALSE?

A) Cytokines called colony-stimulating factors and interleukins regulate the formation and activities of cells involved in nonspecific defense and immunity.
B) Thrombopoietin produced in the kidney regulates the clotting activities of platelets.
C) Erythropoietin and thrombopoietin may be referred to as both hormones and hemopoietic growth factors.
D) All of these choices are TRUE.