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: Surgery
CA prostate metastasizes to the vertebrae by 
Select and explain. 
A. Direct spread, B. Lymphatic spread, C. Batson’s plexus, D. All of the above
C: Batson’s plexus
Answer: C: Batson’s plexus 
Explanation: Through Batson’s periprostatic plexus prostate Ca spreads to verterbra.