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Identify the CORRECT sequence of steps in each cycle of Polymerase Chain Reaction:
A
Denaturation $\rightarrow$ Annealing $\rightarrow$ Extension
B
Denaturation $\rightarrow$ Extension $\rightarrow$ Annealing
C
Extension $\rightarrow$ Annealing $\rightarrow$ Denaturation
D
Annealing $\rightarrow$ Denaturation $\rightarrow$ Extension
The answer is A.
