The institution of the bukumatula (bachelors' houses) is characterized by all of the following EXCEPT?
1) individual appropriation, partners of each couple belonging exclusively to one another
2)strict decorum and absence of any orgiastic or lascivious display
3)the lack of any legally binding element
4)the inclusion of any other community of interest between a pair, save that of sexual cohabitation.
5) E.none of the above