A 34-year-old woman who is an impatient at a local hospital is enrolled in a research study. As part of the study, her medical history is blinded. Spirometry is performed. Flow rate (L/s) is on the y-axis; volume of air (L) is on the x-axis. She has no family history of pulmonary disorders. Which of the following is the most likely explanation for these findings?
Asthma
Chronic bronchitis
Emphysema
Interstitial fibrosis
Sarcoidosis
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