Consider the following reactions at $1000\,^{\circ}C$:
$(I)$ $Zn_{(s)} + 1/2 O_{2(g)} \xrightarrow{\Delta} ZnO_{(s)};$ $\Delta G^o = -360\,kJ\,mol^{-1}$
$(II)$ $C_{(s)} + 1/2 O_{2(g)} \xrightarrow{\Delta} CO_{(g)};$ $\Delta G^o = -460\,kJ\,mol^{-1}$
Choose the correct statement at $1000\,^{\circ}C$.

• A
  $ZnO$ is more stable than $CO$
• B
  $ZnO$ can be reduced to $Zn$ by $C$
• C
  $ZnO$ and $CO$ are formed at equal rate
• D
  $ZnO$ cannot be reduced to $Zn$ by $C$