Which of these is not an example for stereo specificity?

• A. L-lactate dehydrogenase will act only on L-lactic acid, and not D-lactic acid
• B. D-glucose oxidase acting only on D-glucose and not L-glucose
• C. L-amino oxidase acts only on L-amino acids and not D-aminoacids
• D. Hexokinase phosphorylating one or more kind of hexoses