Which of the following statements is false?
a. RNA polymerase can start making a new RNA molecule without a primer: DNA polymerase cannot.
b. RNA polymerase does not proofread its work DNA polymerase does.
c. RNA polymerase catalyzes the linkage of ribonucleotides while DNA polymerase catalyzes the linkage of deoxyribonucleotides.
d. RNA polymerase adds nucleotides in a 3'-to-5' direction: DNA polymerase adds nucleotides in a 5'-to-3' direction.