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
Most common adverse effect of oral anticoagulants- 
Select and explain. 
A. Bleeding, B. Bleeding, C. Diarrhea, D. Vomiting
A: Bleeding
Answer: A: Bleeding 
Explanation: Ans. is 'a' i.e., bleeding o Bleeding (most common) and cutaneous necrosis can occur with any oral anticoagulants.