<prompt> Pneumothorax could be a complication of -Staphylococcal pneumoniaPneumococcal pneumoniaKlebsiella pneumoniaViral pneumonia  <response>: Ans. is a i.e., Staphylococcal pneumonia Staphylococcal pneumonia is the most common cause of amongst all pneumonia Pneumatoceles Pneumothorax Lung abscess Purulent pericarditis Empyema Other organisms commonly causing empyma -- Streptococcus pyogenes, Pneumococci 