At rest, most people require an alveolar ventilation for about 4 L/minute. Suppose an emphysema victim with a tidal volume of 0.5 L has suffered alveolar damage that has produced a respiratory dead space of 0.3 L, what will be that person's frequency of breathing at rest?

• A. 5 breaths/min    
• B.                    8 breaths/min
• C. 20 breaths/min   
• D.                    50 breaths/min