What is the correct sequence of different steps of polymerase chain reaction?

Annealing->denaturation-> extension. Denaturation->Extension-> Annealing. Denaturation-> Annealing-> Extension. Extension-> denaturation-> annealing.

Denaturation-> Annealing-> Extension.

Denaturation-> Annealing-> Extension is the correct sequence of different steps of polymerase chain reaction.