How do the membrane structures of chloroplasts and mitochondria compare?

• A. Chloroplasts have two membranes, while mitochondria have three.
• B. Both chloroplasts and mitochondria have two membranes and an intermembrane space.
• C. Chloroplasts have three membranes, while mitochondria have two.
• D. Both chloroplasts and mitochondria have a single membrane.

Answer: (B)