Calculate $\Delta$ G ^$\circ$ (KJ/mol) for the Following Electrochemical Cell: Be(s) | Be²⁺(aq)

Calculate $\Delta$ G ^$\circ$ (kJ/mol) for the following electrochemical cell: Be(s) | Be²⁺(aq) || Mn²⁺(aq) | Mn(s)

A) -540 kJ/mol
B) -560 kJ/mol
C) -580 kJ/mol
D) -600 kJ/mol
E) None of the above