Which of the Following Shows the Steps of PCR Amplification

Which of the following shows the steps of PCR amplification in the correct order?

A) extract DNA,add nucleotides,heat,add polymerase,cool
B) extract DNA,add polymerase,cycles of heating and cooling,add nucleotides
C) extract DNA,add polymerase,heat,add nucleotides,cool
D) extract DNA,heat,add nucleotides,cool,add polymerase,repeat
E) extract DNA,add nucleotides and polymerase,cycles of heating and cooling