Which of the Following Statements About Voltaic and Electrolytic Cells

Multiple Choice

Which of the following statements about voltaic and electrolytic cells is correct?

A) The anode will definitely gain weight in a voltaic cell.
B) Oxidation occurs at the cathode of both cells.
C) The free energy change, G, is negative for the voltaic cell.
D) The electrons in the external wire flow from cathode to anode in an electrolytic cell.
E) None of the above statements is correct.