This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiration, Subject name: Pathology
[{'content': 'A patient of pneumonia develops sputum expectoration. What is the stage of pneumonia- \nSelect and explain. \nA. Congestion, B. Red hepatization, C. Grey hepatization, D. Resolution', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. is \'d\' i.e., Resolution * "In stage of resolution, consolidation tissue re-aereates and the fluid infiltrate. Causes sputum"* "Symptoms of pneumonia include cough, initially short, painful and dry and later on expectoration (during resolution). -----Clinical medicine', 'role': 'assistant'}]