A fixed mass of air occupies a volume of $150\ \text{cm}^3$ and is at a pressure of $120\ \text{kPa}$. The volume of the air is then altered to $100\ \text{cm}^3$. The temperature of the air stays constant. What is the air’s new pressure?
- A$80\ \text{kPa}$
- B$180\ \text{kPa}$
- C$80\,000\ \text{kPa}$
- D$180\,000\ \text{kPa}$