Which statement correctly differentiates a galvanic cell from an electrolytic cell?

• A. Both cells are spontaneous and generate electricity.
• B. A galvanic cell requires electricity, while an electrolytic cell generates electricity.
• C. Both cells are non-spontaneous and require electricity.
• D. A galvanic cell is spontaneous and generates electricity, while an electrolytic cell is non-spontaneous and requires electricity.

Answer: (D)