You Have Identified an Enzyme That Breaks Down a Storage

You have identified an enzyme that breaks down a storage form of sugar in plants (starch) into simple sugars.How would this enzyme react with a storage form of sugar (glycogen) in humans?

A) Because enzymes are specific,the plant enzyme's active site would not bind to glycogen as a substrate.
B) The plant enzyme's active site would bind to glycogen and break it down into simple sugars.
C) The specificity of the plant enzyme is not dictated by the active site,so it would recognize both substrates.
D) Plant enzymes are grouped by the macromolecule family they work on,and can therefore catalyze a reaction with any substrate in that macromolecule family.
E) Enzymes cannot conduct catabolic reactions such as this one.