Which of the following statements is appropriate for the electrodes to be used in the electrolytic process?

• A. Electrodes provide necessary energy to create or discharge the ions during electrolysis
• B. Electrodes are the ion conducting polymer that contains free ions to carry the current
• C. Electrodes are the solid conducting materials which allows to carry the current during electrolysis
• D. Electrodes provide physical interface between the electrolyte and electrical circuit that provides energy