The Boltzmann distribution for a gas held at a constant temperature of $50\,^{\circ}\text{C}$ is illustrated. When the gas temperature is lowered by $10\,^{\circ}\text{C}$, the graph alters its shape. What change occurs in the values of $n$ for the molecular energies X, Y and Z?
- AX higher, Y lower, Z higher
- BX higher, Y lower, Z lower
- CX lower, Y higher, Z lower
- DX lower, Y lower, Z lower