This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'A 50-year-old man suffering from carcinoma of prostate showed areas of sclerosis and collapse of T10 and T 11 veebrate was most probably through \nSelect and explain. \nA. Sacral canal, B. Lymphatic vessel, C. Internal veebral plexus of veins, D. Superior rectal', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Communication exists between prostatic &veebral venous plexus through which prostatic carcinoma spread to veebral column.', 'role': 'assistant'}]