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
Thorium dioxide causes - 
Select and explain. 
A. Lymphoma, B. Lymphangiosarcoma, C. Angiosarcoma, D. Hemangioendothelioma
C: Angiosarcoma
Answer: C: Angiosarcoma 
Explanation: Hepatic angiosarcomas are associated with carcinogen exposures, including arsenic, thoracotrast and polyvinyl chloride.