A gas sample with a fixed mass occupies a volume of $25\,\text{cm}^3$. Its pressure is $100\,\text{kPa}$. At constant temperature, the gas volume is reduced gradually by $15\,\text{cm}^3$. What is the change in pressure of the gas?
- A$67\,\text{kPa}$
- B$150\,\text{kPa}$
- C$170\,\text{kPa}$
- D$250\,\text{kPa}$