Allotropic Forms of an Element That Do Not Represent an Element

Allotropic forms of an element that do not represent an element in its standard state will have

A) $\Delta \mathrm{H}_{f}^{\circ}$ =
$\Delta \mathrm{G}_{f}^{*}$ = 0
B) $\Delta \mathrm{G}_{f}^{\circ}$ = 0,
$\Delta \mathrm{H}_{f}^{\circ}$ positive
C) $\Delta \mathrm{H}_{f}^{\circ}$ = 0,
$\Delta \mathrm{G}_{f}^{\circ}$ positive
D) S°=0
E) None of the above