In the given diagram, the functional residual capacity will be depicted by:

  
1.  B + F
2.  B + D + F
3.  A - [B + C]
4.  A - E

The total volume of the conducting airways from the nose or mouth down to the level of the terminal bronchioles [about 150ml] which is not capable of exchanging gases with the blood, is referred to as
1. Physiological dead space
2. Anatomical dead space
3. Alveolar dead space
4. Respiratory zone dead space