True regarding blood coagulation is: (A) Addition of Vitamin-K to the freshly drawn blood sample delays clotting, (B) Thrombin conves fibrin to fibrinogen, (C) Heparin inhibits blood coagulation by interfering with Vitamin K metabolism in the liver, (D) Platelet is essential for blood clot formation
Answer is D. . Platelet is essential for blood clot formation