If alveolar ventilation is 4200 mL/min, respiratory frequency is 12 breaths per minute, and tidal volume is 500 mL, what is the anatomical-dead-space ventilation?a. 1800 mL/minb. 6000 mL/minc. 350 mL/mind. 1200 mL/mine. It cannot be determined from the data provided.

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