Air trapped in a sealed syringe is gradually compressed by shifting the piston. The temperature of the air remains unchanged. Which statement about the air is correct?
- AThe pressure of the air decreases because its particles now travel more slowly.
- BThe pressure of the air decreases because the area of the syringe walls is now smaller.
- CThe pressure of the air increases because its particles now hit the syringe walls more frequently.
- DThe pressure of the air increases because its particles now travel more quickly.