A Voltaic Cell Is Prepared in Which Aluminum Metal Is $\rightarrow$

Multiple Choice

A voltaic cell is prepared in which aluminum metal is oxidized to Al³⁺, and nickel(II) is reduced to nickel metal.Which of the following represents the equation for the reaction that occurs at the anode?

A) Al(s) $\rightarrow$ Al³⁺(aq) + 3e^-
B) Ni²⁺(aq) + 2e^- $\rightarrow$ Ni(s)
C) Ni(s) $\rightarrow$ Ni²⁺(aq) + 2e^-
D) Al³⁺(aq) + 3e^- $\rightarrow$ Al(s)
E) 2Al³⁺(aq) + 3e^- $\rightarrow$ 2Al(s)