The correct option is C Glycoprotein
Glycoproteins do not contain metal. Glycoproteins are proteins that contain oligosaccharide chains covalently attached to polypeptide side-chains. The carbohydrate is attached to the protein. Glycoproteins are often important integral membrane proteins, where they play a role in cell-cell interactions. Glycoproteins are simply proteins with a sugar attached to them.The sugars can be attached to a protein in two locations in the cell, the endoplasmic reticulum and Golgi apparatus. They do not contain metal in them.