Which one of the following statements is $CORRECT$ for enzyme catalyzed reactions? ( $\Delta G$ is Gibbs free energy change, $K_{eq}$ is equilibrium constant)
- Enzymes affect $\Delta G$, but not $K_{eq}$
- Enzymes affect $K_{eq}$, but not $\Delta G$
- Enzymes affect both $\Delta G$ and $K_{eq}$
- Enzymes do not affect $\Delta G$ or $K_{eq}$