Which statement correctly distinguishes the light-dependent reactions from the Calvin cycle?

• A. Light-dependent reactions convert light energy to chemical energy (ATP and NADPH) and release O2; the Calvin cycle uses ATP and NADPH to fix CO2 into sugars.
• B. Light-dependent reactions occur in the chloroplast stroma; the Calvin cycle occurs in the thylakoid membranes.
• C. Calvin cycle directly captures light to generate ATP; light-dependent reactions fix CO2.
• D. Both processes produce O2 as a product.

Answer: (A)