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: Pathology
[{'content': 'In primary atypical pneumonia inflammatory cells accumulate in - \nSelect and explain. \nA. Alveolar lumen, B. Bronchioles, C. Alveolar wall, D. Pleural space', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Inflammatory infiltrates are virtually localized within the walls of the alveoli.', 'role': 'assistant'}]