This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Stomach & Duodenum, Subject name: Surgery
[{'content': 'In Forrest classification, high-risk of bleeding is associated with all except: \nSelect and explain. \nA. Visible vessel, B. Visible pulsatile bleeding, C. Adherent clot, D. Visible oozing from vessel', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Rebleeding risk is high in all of the above except in case of adherent clots. Refer to the treasure for the full Forest classification', 'role': 'assistant'}]