Which of the following is not true about warfarin, **
A. INR of 3 is enough to start any extraction
B. Affects extrinsic system and decreases prothrombin time
C. Heparin can be given subcutaneously and acts rapidly
D. It takes up to 12 hours for Vitamin K to reverse the effects of warfarin
A. INR of 3 is enough to start any extraction
B. Affects extrinsic system and decreases prothrombin time
C. Heparin can be given subcutaneously and acts rapidly
D. It takes up to 12 hours for Vitamin K to reverse the effects of warfarin