What Is a Major Distinction Between the Hydrogen Chemolithotrophs and Many

Multiple Choice

What is a major distinction between the hydrogen chemolithotrophs and many sulfur chemolithotrophs and the nitrifying bacteria?

A) Hydrogen chemolithotrophs cannot be cultured in vitro, whereas the sulfur chemolithotrophs and nitrifying bacteria can easily be cultured.
B) Hydrogen chemolithotrophs are almost all facultative chemolithotrophs; the sulfur chemolithotrophs and nitrifying bacteria are nearly all obligate chemolithotrophs.
C) Hydrogen chemolithotrophs are found in dry environments, while sulfur chemolithotrophs and nitrifying bacteria are found in aquatic environments.
D) Hydrogen chemolithotrophs are anaerobes, whereas the sulfur chemolithotrophs and nitrifying bacteria are aerobes.