The correct option is B Residual volume
Residual air is the volume of air that remains in the lungs after the most forceful expiration. It equals to 1100−1200 ml. Residual air mostly occurs in alveoli.
Maximum air that can be breathed in and breathed out is vital capacity (3500−4500 ml) while the air that can be expired over and above the tidal air by most forceful expiration is the expiratory reserve volume (1000−1100 ml).
Total lung capacity is the maximum amount of air lungs can hold and it is approximately 6 litres.
So, the correct answer is 'residual volume'.