Which statement by the professor best describes acute respiratory distress syndrome (ARDS)?
◦ An obstructive airway disease characterized by reversible airflow obstruction, bronchial hyperreactivity, and inflammation
◦ A pulmonary disease characterized by severe hypoxemia, decreased pulmonary compliance, and the presence of bilateral infiltrates on chest x-ray imaging
◦ A respiratory disorder involving an abnormal expression of a protein producing viscous mucus that lines the airways, pancreas, sweat ducts, and vas deferens
◦ A pulmonary disorder characterized by atelectasis and increased pulmonary resistance as a result of a surfactant deficiency