What Accounts for the Higher Energy Density of a Fatty

What accounts for the higher energy density of a fatty acid compared with the other energy-yielding nutrients?

A) Fatty acids have a lower percentage of hydrogen-oxygen bonds.
B) Fatty acids have a greater percentage of hydrogen-carbon bonds.
C) Other energy-yielding nutrients have a lower percentage of oxygen-carbon bonds.
D) Other energy-yielding nutrients undergo fewer metabolic reactions, thereby lowering the energy yield.
E) Other energy-yielding nutrients have a lower percentage of oxygen-hydrogen bonds.