Relative to the chair (0), the twist-boat of cyclohexane is 23.0 kJ/mol and the boat 30.0 kJ/mol higher. Use Boltzmann statistics at 298 K with $R=8.314\mathrm{J}{\mathrm{K}}^{-1}\mathrm{mo}{\mathrm{l}}^{-1}$ and ignore degeneracy factors. Select the correct statements.

1. AThe twist-boat : chair population ratio at 298 K is about $9.3\times 10^{-5}$
2. BThe boat : chair population ratio at 298 K is about $5.5\times 10^{-6}$
3. CAt 298 K the boat is more populated than the twist-boat
4. DThe boat is the energy maximum between two twist-boat forms and so is a transition state for twist-boat interconversion