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
Dicumarol interferes with- 
Select and explain. 
A. Vitamin K, B. Antithrombin, C. Platelets, D. Plasminogen
A: Vitamin K
Answer: A: Vitamin K 
Explanation: Ans. is 'a' i.e., Vitamin K o Dicumarol (an oral anticoagulant) acts by inhibiting Vitamin K dependent clotting factors.