All of the Following Are Correct Statements About Enzyme Regulation

All of the following are correct statements about enzyme regulation EXCEPT:

A) Enzymes can be inhibited by the products they produce.
B) Enzymes can be inactivated by the addition of a functional group.
C) Coenzyme and substrate availability can regulate enzyme reaction rate.
D) The reaction rate slows as equilibrium is approached.
E) The activity of an enzyme is covalently affected by allosteric regulators.