For the Dimerization of Nitrogen Dioxide to Form Dinitrogen Tetroxide $\Delta$

For the dimerization of nitrogen dioxide to form dinitrogen tetroxide (N₂O₄) according to the reaction 2 NO₂ (g) ⇄ N₂ O₄ (g) , the value of $\Delta$ H $\degree$ is -57.2 kJ/mol, and that of $\Delta$ S $\degree$ is -175.8 J/mol . K.Estimate
$\Delta$ G $\degree$ at 100.00 $\degree$ C.

A) (+6.6 kJ/mol)
B) (-39.6 kJ/mol)
C) (-122.8 kJ/mol)
D) (-74.8 kJ/mol)
E) (+8.4 kJ/mol)