Which of the Following Quantities Is Not Equal to Zero $\Delta$

Multiple Choice

Which of the following quantities is not equal to zero at 298 K?

A) $\Delta$ H_f ^$\circ$ (H⁺(aq) )
B) S ^$\circ$ (H₂(g) )
C) S ^$\circ$ (H⁺(aq) )
D) $\Delta$ G_f ^$\circ$ (H⁺(aq) )
E) $\Delta$ H_f ^$\circ$ (H₂(g) )