Which of the Following Is the Best Potential Reason That

Multiple Choice

Which of the following is the best potential reason that anoxic methane-oxidizing Archaea have not also acquired the ability to reduce sulfate?

A) Sulfate is toxic to these archaeans.
B) Having fewer metabolic capabilities decreases the archaeonʹs genome size and gives it flexibility to interact with other reducing bacteria, such as nitrate bacteria.
C) The archaeans are too rare to survive without the bacteria.
D) The methane-oxidizing Archaea are not capable of acquiring this metabolic capability.