This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardio thoracic surgery  , Subject name: Anatomy
[{'content': 'Most common cause of amoebic lung abcess \nSelect and explain. \nA. Inhalation, B. Direct extension from liver, C. Hematogenous spread, D. Lymphatic spread', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Amoebic lung abscess is a result of direct spread of infection from liver to lung. The infection spreads directly through the diaphragm. The most common area of the lung involved is right lower lobe. The amoebic liver abscess ruptures and then it can involve any of the following structures. Right lung (Most commonly) Right pleural cavity Left Lung Pericardium Peritoneal cavity', 'role': 'assistant'}]