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: Pathology
An HIV positive patient presented with the clinical condition as seen in the color plate. Which of the following is the most probable diagnosis? 
Select and explain. 
A. Pyogenic Granuloma, B. Kaposi sarcoma, C. Linear Gingival Erythema, D. Focal Epithelial Hyperplasia
B: Kaposi sarcoma
Answer: B: Kaposi sarcoma 
Explanation: Kaposi sarcoma is almost exclusively seen in HIV patients.