Which statement below about vitamin K is true? A. It is water soluble. B. It is essential for prothrombin production by the liver. C. It is part of the “extrinsic pathway” of formation of prothrombin activator. D. It destroys fibrin so allowing a clot to gradually dissolve.
Option B. Vit K is needed for the liver to provide prothrombin (inactive thrombin). Plasmin destroys fibrin.
