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: Medicine
[{'content': "Miliary tuberculosis results from spread of tubercle bacilli by way of: \nSelect and explain. \nA. Lymphatics, B. Waldeyer's ring, C. The bloodstream, D. The urinary system", 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]