Lipid Catabolism Yields 1

Lipid catabolism yields 1.3 times as much ATP compared to aerobic glucose metabolism. So why is lipid catabolism not the prime source of ATP in the human body?

A) Most people do not have enough lipid reserves.
B) Water-soluble enzymes cannot easily get to the lipid droplets.
C) Lipid catabolism occurs in the cytosol where oxygen availability is limited.
D) Lipid catabolism occurs primarily during times of starvation.
E) Lipid catabolism produces large amounts of nitrogenous wastes, which are taxing on the liver.