The photomicrograph shows a section of the lung viewed with a light microscope. Which row is correct for the features marked 1, 2 and 3?
- A1: alveolus, 2: bronchiole, 3: capillary
- B1: alveolus, 2: capillary, 3: bronchiole
- C1: bronchiole, 2: alveolus, 3: small artery
- D1: small artery, 2: alveolus, 3: bronchiole