Template independent polymerases are the enzymes which add nucleotide bases without a template. Which of the following statements is correct with respect to these?

• A. They only add a single nucleotide
• B. They only add a string of nucleotides and not a single nucleotide
• C. Terminal transferase adds a series of nucleotides at the 3’ end
• D. Taq polymerase adds a single nucleotide at the 5’ end of the PCR product