Yeast research with autonomously replicating sequences (ARSs),along with digestion of chromatin with DNase I,have led scientists to determine that

A) DNA is not protected inside a nucleosome.
B) ARSs are really plasmids.
C) RSs bond irreversibly to replication enzymes.
D) origins of replication are accessible regions of DNA devoid of nucleosomes.
E) ARSs replicate without DNA polymerase.