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
[{'content': 'Most common adverse effect of oral anticoagulants- \nSelect and explain. \nA. Bleeding, B. Bleeding, C. Diarrhea, D. Vomiting', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., bleeding o Bleeding (most common) and cutaneous necrosis can occur with any oral anticoagulants.", 'role': 'assistant'}]