Why Do Positively Charged Amino Acids Appear More Often Than

Why do positively charged amino acids appear more often than usual in histone proteins?

A) Histones have a higher molecular mass, which improves DNA compaction.
B) Histones are strongly attracted to the positively charged phosphate backbone of DNA.
C) Histones and DNA have opposite charges, which improves the compaction of DNA into nucleosomes.
D) Histones and DNA have the same charge, which improves the compaction of DNA into nucleosomes.