The table indicates how exercise affects the rate and depth of breathing. What is the increase in the volume of air exchanged per minute after exercise, compared with when at rest?
- A$1000\,\text{cm}^3$
- B$6000\,\text{cm}^3$
- C$18\,000\,\text{cm}^3$
- D$24\,000\,\text{cm}^3$