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
After renal transplant the commonest malignancy is 
Select and explain. 
A. Adrenal cancer, B. Lymphoma, C. Renal cell Ca, D. Skin malignancy
D: Skin malignancy
Answer: D: Skin malignancy 
Explanation: (D) Skin malignancy