Naming of a New Cultigen or Clade Follows

Naming of a new cultigen or clade follows

A) the rules of the International Code of Botanical Nomenclature (ICBN) .
B) the same rules as those used to name a newly discovered species.
C) a single system for both cultigen and clade; the system differs from the ICBN.
D) two different systems; one for the naming of cultigens and the other for the naming of clades. Both differ from the ICBN.
E) no particular rules; its up to the individual who first developed the cultigen or clade.