Match the following respiratory disorders with their characteristics:
| Column I | Column II |
| A. Asthma | I. Damage to alveolar walls |
| B. Emphysema | II. Difficulty in breathing due to inflamed bronchi |
| C. Pneumonia | III. Inflammation of lungs due to infection |
| D. Occupational disease | IV. Lung fibrosis caused by long exposure to dust |
Choose the correct option:
1
A-II, B-I, C-III, D-IV
2
A-II, B-I, C-IV, D-III
3
A-I, B-IV, C-II, D-III
4
A-III, B-IV, C-I, D-II