You need many copies of the amelogenin gene, which you will make using Polymerase Chain Reaction (PCR). You will need to follow the steps of replication. Which of the following would allow you to begin?
A: Add short stretches of single stranded DNA complementary to the sequence at either end of the gene.
B: Add DNA polymerase enzyme.
C: Break the covalent bonds that hold the double helix together.
D: Break the hydrogen bonds that hold the double helix together.