<prompt> Which of the folio wing is the least com mon bacteria responsible for Acute Exacerbation of Chronic Bronchitis -Streptococcus pneumoniaeMoraxella catarrhalisHaemophilus influenzaStaphylocccus aureus  <response>: .Ans. is d i.e., Staphylocccus aureus Most common bacterias associated with acute excerbation in COPDo Hemophilus influenzao Moraxella catarrhaliso Streptococcus pneumoniae 