The figure below shows three steps (A,B,C) of Polymerase Chain Reaction (PCR). Select the option giving correct identification togather with what it represents

Options

A. B-denaturation at a temperature of about `98^(@)C` separating the two DNA strands.
B. A - denaturation at a temperature of about `50^(@)C`.
C. C-extension in the presence of heat stable DNA polymerase.
D. A - annealing with two sets of primers.

Answer

A

Explanation

B-denaturation at a temperature of about `98^(@)C` separating the two DNA strands.