Statement: In the case of an ideal gas the changes in Gibbs and Helmholtz free energies are equal to each other (`DeltaG=DeltaA`) for isothermal reversible process.
Explanation: There is no change in internal energies and enthalpies for ideal gas at constant temperature.
A. `S` is correct but `E` is wrong.
B. `S` is wrong but `E` are correct and `E`
C. Both `S` and `E` are correct but `E` is correct explanation of `S`.
D. Both `S` and `E` are correct but `E` is not correct explanation of `S`.
