Which of the following statements is true of the action of amylase at its ... ...

Which of the following statements is true of the action of amylase at its optimum pH and temperature?
(A) The enzyme is irreversibly changed, so that one enzyme molecule can only catalyze the reaction once.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in 03. Enzymes and Energy