A 75-year-old man develops pneumonia 6 days after intubation in the intensive care unit. Cultures are pending. He is febrile, hypotensive and requires vasopressors. What is the most appropriate empiric approach?AOral amoxicillin-clavulanate as in community-acquired pneumoniaBNo antibiotics until sputum cultures are availableCBroad-spectrum intravenous antibiotics covering Pseudomonas and MRSA, tailored once cultures returnDMacrolide monotherapyEMetronidazole monotherapyCheck my answer