Which of the Following Statements Best Describes the Induced Fit

Which of the following statements best describes the induced fit model of enzyme activity?

A) The binding of substrate depends on the conformation of the active site.
B) The binding of an activator alters the conformation of the active site to bind products more tightly.
C) The binding of substrate changes the conformation of the active site to bind substrate more tightly.
D) The binding of a competitive inhibitor changes the shape of the active site so that it binds substrate less tightly.