Your next patient is a 22-year-old woman presenting with sho…

Your next patient is a 22-year-old woman presenting with shortness of breath. Asthma is among the differential diagnoses under consideration.   To assess for reversible airflow obstruction, you administer a short-acting beta-2 agonist to determine reversible airflow obstruction. Which of the following findings would best support a diagnosis of asthma?