All Life as We Know It Requires Carbon and Energy

All life as we know it requires carbon and energy.Which of the following BEST describes how organisms in the Lost City can acquire these (understanding that not all species will use all sources) ?

A) Lost City organisms acquire carbon from methane and energy from hydrogen gas.
B) Lost City organisms acquire carbon from methane and carbon dioxide;they acquire energy from hydrogen gas.
C) Lost City organisms acquire carbon from methane and energy from both hydrogen gas and methane.
D) Lost City organisms acquire carbon from both methane and carbon dioxide;they acquire energy from both hydrogen gas and methane.
E) Lost City organisms acquire carbon from hydrogen gas,methane,and carbon dioxide;they use the same materials as energy sources.