<prompt> Dicumarol is a drug that impairs the utilization of vitamin K by the liver. Dicumarol therapy would decrease the plasma concentration of which of the following procoagulantsProthrombinFibrinogenFactor VIIIFactor V  <response>: Factor II is also called as Prothrombin, it is a vitamin K dependent clotting factor. Warfarin acts by inhibiting Vitamin K Epoxide Reductase ComplexVKORC subunit 1 Ref: Ganong 25th edpage 567 