39. The leading and the lagging strands differ in that
(A) synthesize leading strands require RNA primer, but synthesize lagging strands do not require RNA primer.
(B) the leading strand is synthesized by adding nucleotides to the 3' end of the growing strand, and the lagging strand issynthesized by adding nucleotides to the 5' end.
(C) the lagging strand is synthesized continuously, whereas the leading strand is synthesized in short fragments that areultimately stitched together.
(D) the leading strand is synthesized in the same direction as the movement of the replication fork, and the lagging strandis synthesized in the opposite direction.
(E) the leading strand is synthesized at twice the rate of the lagging strand.