Task: Text Categorization
Input (English): Question: In chronic bronchitis, it is characteristic: 
 Options:  <0> Destruction of alveolar walls. <1> Difficulty in the inspiratory flow. <2> Decrease in the volume of inspiratory reserve. <3> Elevation of capillary hydrostatic pressure. <4> Inflammation and mucosal hypersecretion of the respiratory tract.
Output (English): pharmacology