30. Which of the following statements regarding enzyme regulation is true?
(A) Addition of an inhibitor to a V system results in kinetics similar to addition of a competitive inhibitor to atypical hyperbolic system.
(B) Addition of an allosteric activator to a K system changes the plot of V vs. [S] from a sigmoidal curve to amore hyperbolic curve.
(C) Allosteric effectors are always more powerful than covalent modification.
(D) The I state of an enzyme generally has more activity than the R state.
(E) None of the above is true.