Consider a Voltaic Cell That Corresponds to the Following Reaction $\rightarrow$

Consider a voltaic cell that corresponds to the following reaction: Mg(s) + Sn²⁺(aq) $\rightarrow$ Mg²⁺(aq) + Sn(s) If this reaction takes place in the electrochemical cell shown in the figure, which of the following statements is incorrect?

A) I is the magnesium electrode, which is the anode.
B) II is the Mg²⁺ solution.
C) III is the salt bridge.
D) IV contains the substance that is being oxidized.
E) V is the tin electrode, which is the cathode.