What Is a Methanogen

Multiple Choice

What is a methanogen?

A) A prokaryote in domain Bacteria that consumes methane for energy,and releases small hydrocarbons as byproducts.
B) A prokaryote in domain Archaea that consumes carbon dioxide and hydrogen for energy,and releases methane as a byproduct.
C) A prokaryote in in domain Bacteria that consumes carbon dioxide and water for energy,and releases methane as a byproduct.
D) A prokaryote in domain Bacteria that consumes carbon dioxide and hydrogen for energy,and releases methane as a byproduct.
E) A prokaryote in domain Archaea that consumes methane for energy,and releases carbon dioxide and water as byproducts.