3. In contrast to bacteria, eukaryotic chromosomes need multiple DNA replication origins because:
(A) they have a variety of DNA polymerases for different purposes, and need a corresponding variety of replication origins.
(B) the processivity of the eukaryotic DNA polymerase is much less than the bacterial enzyme.
(C) eukaryotic genomes are not usually circular, like the bacterial chromosome is.
(D) eukaryotic chromosomes cannot usually replicate bidirectionally.
(E) it would take too long with only a single origin per chromosome.