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
[{'content': 'Cavernous sinus thrombosis can occur due to spread of odontogenic infection via: \nSelect and explain. \nA. Tissue spaces, B. Lymphatic route, C. Hematogenous route, D. All of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]