Which of the Following Statements Is True

Which of the following statements is true?

A) Bacteria and Archaea are very similar in their adaptations, morphology, metabolic pathways, biochemistry, and functions.
B) Bacteria and Archaea are very closely related.
C) Gene sequences of prokaryotes have been extracted from environmental samples of soil and seawater.
D) Examination of genes obtained from environmental sampling indicates all unknown species resemble known species.
E) The majority of prokaryotic cells are easily grown in pure culture in laboratories.