<prompt> A patient of pneumonia develops sputum expectoration. What is the stage of pneumonia-CongestionRed hepatizationGrey hepatizationResolution  <response>: 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 