15.Regarding statements about chromatin and epigenetics, which of the following is/are CORRECT? (A) Н3КK9me3 is often associated with heterochromatin (B) Histone acetylation is usually associated with transcriptional activation (C) DNA methylation near promoters is often associated with gene silencing (D)The nucleosome core consists of two of each H2A, H2B, H3, and H4 (histone octamer) (E)Heterochromatin is usually looser and more easily digested by DNase.