Why Are Fats a Better Source of Energy Than Carbohydrates

Why are fats a better source of energy than carbohydrates?

A) Fatty acids have a long chain of reduced carbon atoms that will produce large amounts of ATP when their bonds are broken...
B) Fatty acids have a short chain of reduced carbon atoms that will produce large amounts of ATP when their bonds are broken.
C) Fatty acids have a long chain of reduced hydrogen atoms that will produce large amounts of ATP when their bonds are broken
D) Fatty acids have a long chain of reduced carbon atoms that will produce large amounts of ATP when their bonds are broken..
E) Fatty acids have a long chain of reduced carbon atoms that will produce large amounts of ATP when they form covalent bonds.