The Solubility Product Constant,K_sp,at 25°C for AgI(s)in Water Has the Value

The solubility product constant,K_sp,at 25°C for AgI(s) in water has the value 8.3 × 10^-17. Calculate ΔG at 25°C for the process AgI(s) Ag⁺(aq) + I^-(aq) where [Ag⁺] = 9.1 × 10^-9
M and [I^-] = 9.1 × 10^-9 M.(R = 8.314 J/K • mol)

A) +4.4 kJ/mol
B) +91.7 kJ/mol
C) 0.0 kJ/mol
D) -91.7 kJ/mol
E) -4.4 kJ/mol