The incorrect expression among the following is

According to Gibbs Helmholtz equation,∆G=∆H-T∆S(a)  For a system, total entropy change = ∆Stotal∆Stotal=0∴       ∆Gsystem=-T∆Stotal ∴        ∆Gsystem∆Stotal=-TThus, (a) is correct.(b) For isothermal reversible process, ∆E=0By first law of thermodynamics, ∆E=q+W∴       Wreversible  =-q=-∫ViVfpdV ⇒      Wreversible  =-nRT ln VfViThus, (b) is correct(c) ∆G0=∆H0-T∆S0                 ....(1) Also, ∆G0= -RT ln K ln K = ∆H0-T∆S0RT ln K = ∆G0RT                 [from Eq. (i)] Thus, (c) is incorrect(d) The standard free energy ∆G0 is related to equilibrium constant K as∆G0=-RT  ln K ∴    ln K = ∆G0RT ⇒      K = -e-∆G0 Thus,  (d) is also correct.