This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Anatomy
[{'content': 'Commonest cause of pyogenic liver abscess \nSelect and explain. \nA. Aspiration, B. Hematogenous spread from a distant site, C. Direct contact, D. Lymphatic spread', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Hematogenous spread is most common among given option', 'role': 'assistant'}]