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
[{'content': 'What is the causative agent of kaposi sarcoma \nSelect and explain. \nA. HBV, B. HCV, C. HHV, D. HSV', 'role': 'user'}, {'content': 'Answer: C \nExplanation: HHV - 8 (Human Herpesvirus 8) is the causative agent of kaposi sarcoma.', 'role': 'assistant'}]