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

c

Explanation

c) Expansion proceeds at `72^(@)`C in the presence of Taq DNA polymerase in PCR.