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: Surgery
[{'content': 'The principal cause of death in renal transplant patients- \nSelect and explain. \nA. Uremia, B. Malignancy, C. Rejection, D. Infection', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Principal causes of death in renal transplant patients (in decreasing order)\n\n\nHeart disease\nInfection\nStroke', 'role': 'assistant'}]