This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
Which of the following is advocated in dicoumarol poisoning: March 2005 
Select and explain. 
A. Warfarin, B. Heparin, C. LMWH, D. Vitamin K
D: Vitamin K
Answer: D: Vitamin K 
Explanation: Ans. D: Vitamin K Dicoumarol is a competitive inhibitor of Vitamin K preventing the formation of prothrombin. Administration of Vitamin K is the antidote for dicoumarol toxicity. Follow-up is done by measuring the prothrombin time (PT).