Which one of the following is not a component of phospholipids?

So we did talk about phospholipids being involved with fatty acids because it is underneath the umbrella term of fatty acids. Phosphate. We said that phospholipids, an important aspect of them, is that they contain a phosphate group. It can be connected to a glycerol molecule or a sphingosine molecule. Cholesterol. Cholesterol here is not a component of phospholipids, and in fact, it belongs under the category of steroids. So here, this would be our answer. Then finally, Glycerol. Glycerol can be a vital component of phospholipids. It forms a potential backbone in terms of the attachment of the phosphate group. So this would also be a component of phospholipids. So here the only answer that's correct is option c. Cholesterol is not a component of phospholipids.