This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Enzymes, Subject name: Biochemistry
All have antioxidant propey except 
Select and explain. 
A. Catalase, B. Glutathione peroxidase, C. Phosphorylase, D. Superoxide dismutase
C: Phosphorylase
Answer: C: Phosphorylase 
Explanation: Although numerous biologically active molecules exist as glycosides in nature, information on the activity, stability, and solubility of glycosylated antioxidants is rather limited to date. In this work, a wide variety of antioxidants were glycosylated using different phosphorylase enzymes. The resulting antioxidant library, containing a/b-glucosides, different regioisomers, cellobiosides, and cellotriose, was then characterized. Glycosylation was found to significantly increase the solubility and stability of all evaluated compounds. Despite decreased radical-scavenging abilities, most glycosides were identified to be potent antioxidants, outperforming the commonly used 2,6-bis(1,1-dimethylethyl)-4-methylphenol (BHT). Moreover, the point of attachment, the anomeric configuration, and the glycosidic chain length was found to influence the propeies of these phenolic glycosides