A) Reproduction in archaea is predominantly asexual. B) RNA polymerase components of the archaeon Sulfolobus are homologous to those of eukaryotic RNA Pol II. C) All known archaea have a single circular chromosome and genes organized in operons. D) Archaeal DNA-packing proteins and ribosomal components closely resemble those of eukaryotes. E) Both archaeal and eukaryotic genomes encode metabolic pathways of methanogenesis.