The correct option is D Liver
The fat in the human diet is in the form of triglycerides. To use the fat as a source of energy for the body it needs to be broken down - a process referred to as fat metabolism. This metabolism which takes place primarily in the liver gives out cholesterol and phospholipids. These are made available to the rest of the body along with lipoproteins and the rest are excreted out through bile. Thus, the correct answer is option D.