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: Microbiology
Most common tumor associated with AIDS is 
Select and explain. 
A. Carcinoma, B. Kaposi's sarcoma, C. Melanoma, D. Ewing's sarcoma
B: Kaposi's sarcoma
Answer: B: Kaposi's sarcoma 
Explanation: None