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: Medicine
Most common malignancy in renal transplant patient- 
Select and explain. 
A. Kaposi sarcoma, B. Lung sarcoma, C. Non hodgkin lymphoma, D. Hodgkin lymphoma
A: Kaposi sarcoma
Answer: A: Kaposi sarcoma 
Explanation: None