A number of symptoms of chronic obstructive pulmonary disease (COPD) are shown below. 1 bursting of alveoli 2 loss of elastic fibres 3 increase in secretion of mucus 4 reduction in surface area for gaseous exchange 5 narrowing of airways Which of these are also symptoms of emphysema?
- A1, 2 and 4
- B1, 3 and 5
- C2, 3 and 5
- D3, 4 and 5