A student was asked to explain how four microscope slides differed when they showed sections cut from different regions of the gas exchange system. Which option gives the correct identification of the parts of the gas exchange system?
- Aslide 1: alveolus, slide 2: bronchiole, slide 3: bronchus, slide 4: trachea
- Bslide 1: bronchiole, slide 2: bronchus, slide 3: alveolus, slide 4: trachea
- Cslide 1: bronchiole, slide 2: trachea, slide 3: alveolus, slide 4: bronchus
- Dslide 1: bronchus, slide 2: trachea, slide 3: bronchiole, slide 4: alveolus