The Concept of Metagenome Establishes That

The concept of metagenome establishes that:

A) eukaryotic chromosomes are formed by highly condensed DNA strands, tightly associated to histones and scaffold proteins
B) the gut microbiota is a functional part of the human body, and therefore the genomes of organisms composing the human gut microbiota are part of the human metagenome
C) DNA fragments should be repeatedly sequenced to avoid sequencing errors
D) all of the above
E) none of the above