<prompt> All of the following statement are true regarding centriacinar emphysema, except:Most common type of emphysemaRespiratory bronchiole are affected and distal alveoli are sparedCommon and more severe in lower lobesAssociated with smoking  <response>: Centri-acinar Emphysema Cs Commonest type of emphysema Central poion of acinus involved. Cigarette smoking It is common and more severe in UPPER lobe 