In Replication of a Linear Double-Stranded DNA Molecule, One End

Multiple Choice

In replication of a linear double-stranded DNA molecule, one end of each strand becomes shorter in each round of replication. This happens because:

A) each replicated DNA strand requires an RNA primer.
B) the RNA primer cannot be replaced at the very end of a DNA strand.
C) DNA polymerase elongates a growing DNA strand at only the 3 end.
D) All of these choices are correct.