In the equation dG = A*dᵞ+ ᵞ*dA, if dᵞ = 0, what does that mean? (ᵞ is the interfacial free energy, A is the area of interface).

• A. The interfacial excess free energy is less than surface tension
• B. The interfacial excess free energy is same as surface tension
• C. The interfacial excess free energy is greater than surface tension
• D. Cannot be predicted
• E. .a) The interfacial excess free energy is less than surface tensionb) The interfacial excess free energy is same as surface tensionc) The interfacial excess free energy is greater than surface tensiond) Cannot be predicted