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: Pathology
[{'content': 'Humoral graft rejection is characterised by? \nSelect and explain. \nA. Intense mononuclear infiltration, B. Neovascularisation of grafted tissue, C. Thrombosis of the blood vessels and ischemic necrosis, D. Monocytic infiltration', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Thrombosis of the blood vessels and ischemic necrosis", 'role': 'assistant'}]