<prompt> In Asthma patient positive bronchodilator reversibility test is indicated byIncrease in FEV1 5 after SABA inhalationIncrease in FEV1 12 after SABA inhalationIncrease in FEV1 25 after SABA inhalationIncrease in FEV1 50 after SABA inhalation  <response>: Answer- B. Increase in FEV1 12 after SABA inhalation Bronchial reversibility is defined as SABA induced increase in FEVI 12 and 0.20 litres 200 ml 