Which Statement Regarding Classification Groups Is False

Which statement regarding classification groups is false?

A) Monophyletic groups contain descendants of only a single ancestor.
B) Polyphyletic groups contain members that do not share the same common ancestor.
C) Paraphyletic groups contain some, but not all, of the descendants of a particular ancestor.
D) Modern classifications should contain polyphyletic groups.
E) Taxonomists agree polyphyletic groups are inappropriate taxonomic units.