A 65-year-old patient with a 40-pack-year smoking history presents with chronic cough and dyspnoea. Spirometry confirms COPD with FEV1 50% predicted. He is on a SABA PRN. What is the next step in management according to NICE guidelines?AA. High-dose inhaled corticosteroid monotherapyBB. Long-acting beta-2 agonist (LABA) plus inhaled corticosteroidCC. Long-acting muscarinic antagonist (LAMA)DD. Oral theophyllineEE. Nebulised bronchodilatorsCheck my answer