Which Statement by the Healthcare Professional Accurately Describes Childhood Asthma

Which statement by the healthcare professional accurately describes childhood asthma?

A) An obstructive airway disease characterized by reversible airflow obstruction, bronchial hyperreactivity, and inflammation
B) A pulmonary disease characterized by severe hypoxemia, decreased pulmonary compliance, and diffuse densities on chest x-ray imaging
C) A pulmonary disorder involving an abnormal expression of a protein, producing viscous mucus that lines the airways, pancreas, sweat ducts, and vas deferens
D) An obstructive airway disease characterized by atelectasis and increased pulmonary resistance as a result of a surfactant deficiency