Kingdom Monera Bacterial Cell Structure

In the light of recent classification of living organisms into three domains of life (bacteria. archaea and eukarya), which one of the following statement is true about archaea?

1.	Archaea resemble eukarya in all respects.
2.	Archaea have some novel features that are absent in other prokaryotes and eukaryotes.
3.	Archaea completely differ from both prokaryotes and eukaryotes.
4.	Archaea completely differ prokaryotes.