Equal masses of methane gas are kept under different conditions. At which set of conditions will the methane gas take up the smallest volume?
- A$0\,^\circ\text{C}$ and atmospheric pressure
- B$0\,^\circ\text{C}$ and twice atmospheric pressure
- C$30\,^\circ\text{C}$ and atmospheric pressure
- D$30\,^\circ\text{C}$ and twice atmospheric pressure