This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Surgery
[{'content': 'After renal transplant the commonest malignancy is \nSelect and explain. \nA. Adrenal cancer, B. Lymphoma, C. Renal cell Ca, D. Skin malignancy', 'role': 'user'}, {'content': 'Answer: D \nExplanation: (D) Skin malignancy', 'role': 'assistant'}]