For each of the following sentences, choose one of the options enclosed in square brackets to make a correct statement about nucleosomes.
A.Nucleosomes are present in [prokaryotic/eukaryotic] chromosomes, but not in [prokaryotic/eukaryotic] chromosomes.
B.A nucleosome contains two molecules each of histones [H1 and H2A/H2A and H2B] as well as of histones H3 and H4.
C.A nucleosome core particle contains a core of histone with DNA wrapped around it approximately [twice/three times/four times].
D.Nucleosomes are aided in their formation by the high proportion of [acidic/basic/polar] amino acids in histone proteins.
E.Nucleosome formation compacts the DNA into approximately [one-third/one-hundredth/one-thousandth] of its original length.
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