And in stage B, these fatty acids are activated, they're made more reactive and then they're transported into the matrix of the mitochondria. And that's when stage C begins. In stage C, those fatty acids are broken down in the matrix of the mitochondria into acetyl coenzyme A molecules. And these acetyl coenzyme A molecules can be fed into the citric acid cycle to help us generate the high energy ATP molecules. Now, in this lecture, what I'd like to focus on is stage A. So the breakdown of the mobilization of these triglycerides into fatty acids and glycerol molecules.