Which list shows all official Ubuntu distributions and derivatives?

Which list shows all official Ubuntu distributions and derivatives?

A.
Ubuntu, Xubuntu, Zubuntu, Gubuntu, nUbuntu

B.
Ubuntu, Kubuntu, Zubuntu, Edubuntu, nUbuntu

C.
Ubuntu, Kubuntu, Edubuntu, Xubuntu, ImpiLinux

D.
Ubuntu, Gubuntu, Zubuntu, Xubuntu, ImpiLinux