A 28-year-old woman presents with intermittent wheeze and cough, worse with exercise and at night. She has no smoking history. Baseline spirometry shows FEV1/FVC of 0.68. After inhaled salbutamol, FEV1 increases by 14 percent and 300 mL, and FEV1/FVC normalises. According to Canadian asthma guidance, what is the most appropriate interpretation?