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': 'Most common infection caused by pseudomona is: \nSelect and explain. \nA. Respiratory infection, B. UTI, C. Skin infection, D. Wound sepsis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Respiratory infections are the most common infections caused by P. aeruginosa. Chest radiographs may show bilateral pneumonia, often with nodular densities with or without cavities. Necrotizing pneumonia has also been seen Ref: Harrison, E-18, P-1268', 'role': 'assistant'}]