Which of the Following Statements Concerning Nucleic Acids Is Not

Which of the following statements concerning nucleic acids is not correct?

A) The enzymes that catalyze DNA synthesis are known as DNA polymerases.
B) The growing DNA polymer is synthesized in the 5' to 3' direction.
C) RNA strands are synthesized in the 3' to 5' direction.
D) In DNA the distance between the strands of the double helix is relatively constant.
E) Unlike DNA,RNA is easily cleaved because the 2'-OH group of the ribose can act as the nucleophile that cleaves the strand.