Which statement describes the differences van Neil discovered between how purple sulfur bacteria perform photosynthesis and how other organisms perform photosynthesis?

A. Purple sulfur bacteria use hydrogen sulfide instead of water, do not require light, and release sulfur.
B. Purple sulfur bacteria use hydrogen sulfide instead of water, do not produce oxygen, and release sulfur.
C. Purple sulfur bacteria use sulfur instead of water, do not produce oxygen, and release hydrogen sulfide.
D. Purple sulfur bacteria use sulfur instead of water, do not require light, and release hydrogen sulfide.