At Room Temperature Cyclohexane Exists Almost Exclusively in the Chair $\leftrightarrows$

At room temperature cyclohexane exists almost exclusively in the chair conformation (99.99%) . But at 800°C, 30% of the cyclohexane molecules exist in the twist-boat conformation.
Compared to its value at 25°C, the value of DG° at 800°C for the reaction
C₆H₁₂(chair) $\leftrightarrows$ C₆H₁₂(twist-boat)
Should

A) be larger in magnitude and have the same sign
B) be larger in magnitude and have the opposite sign
C) be smaller in magnitude and have the same sign
D) be smaller in magnitude and have the opposite sign
E) not enough information to answer the question