<prompt> A patient on spirometry shows FEV1FVC 0.7 and FEV1 30 but 50 predicted. Patients diagnosis according to GOLD criteria is?Mild COPDModerate COPDSevere COPDVery severe COPD  <response>: Patient with these findings FEV1FVC 0.7 and FEV1 30 but 50 predicted suggestive of diagnosis of Severe grade of COPD GOLD Stage Severity Spirometry I Mild FEV1FVC 0.7 and FEV1 80 predicted II Moderate FEV1FVC 0.7 and FEV1 50 but 80 predicted III Severe FEV1FVC 0.7 and FEV1 30 but 50 predicted IV Very severe FEV1FVC 0.7 and FEV1 30 predicted 