Which of the following statements is TRUE?1. DNA polymerase is capable of synthesizing DNA without attaching the incoming nucleotide to a pre-existing, free, 3' hydroxyl group2. Primase, an RNA polymerase, is capable of synthesizing RNA without attaching the incoming nucleotide to a pre-existing, free, 3' hydroxyl group3. Once helicase has initially opened up the DNA double helix, it dissociates from the molecule allowing single stranded binding proteins and DNA polymerase to bind4. DNA polymerase incorporates new nucleotides into the growing DNA molecule by forming hydrogen bonds between complementary nucleotides on opposite strands of the double helix.5. Only the lagging strand requires the enzyme primase