Using the Standard Reduction Potentials Calculate the Standard Free $\Delta$

Using the standard reduction potentials Calculate the standard free energy ( $\Delta$ G°) change for the cell reaction:
2 Au(s) + 3 Ca²⁺(aq) $\rarr$ 2 Au³⁺(aq) + 3 Ca(s)

A) 2420 kJ
B) 388 kJ
C) -766 kJ
D) 766 kJ
E) -1210 kJ