15. Which statement best describes the function of fibrinogen?(A) It transports lipids, playing a role in clotting and defending the body against foreign substances.(B) It primarily affects the movement of fluid into capillaries by creating an osmotic gradient.(C) It provides the nutrients needed to replicate erythrocytes.(D) It is the key substance in the formation of blood clots.(E) It aids in the structural form of the erythrocyte.