If a sample of gas is compressed at constant temperature from $1500\ \text{kPa}$ to $6000\ \text{kPa}$, its volume changes from $76.0\ \text{cm}^3$ to $20.5\ \text{cm}^3$. Which of the following statements could explain this behaviour?
- A1, 2 and 3
- B1 and 2 only
- C2 and 3 only
- D1 only