Cobalt(III) Oxide Reacts with Hydrogen Gas to Form Cobalt Metal $\rightarrow$

Cobalt(III) oxide reacts with hydrogen gas to form cobalt metal and water.
Co₂O₃(s) + 3 H₂(g) $\rightarrow$ 2 Co(s) + 3 H₂O(g)
What does this tell you about the relative strength of the oxidizing and reducing agents in this reaction?

A) The Co3+ ion is a stronger reducing agent than cobalt metal.
B) Cobalt metal is a better reducing agent than water.
C) Cobalt metal is a weaker reducing agent than hydrogen.
D) The Co3+ ion is a weaker oxidizing agent than water.
E) Statements (a) through (d) above are all false.