Which One or More of the Following Statements Accurately Reflects

Which one or more of the following statements accurately reflects our understanding of platyhelminth phylogeny? Select all that apply.

A) The taxonomic status of the entire phylum is in question.Molecular information is often interpreted to support the monophyly of the phylum as we know it,but morphological evidence for that conclusion is tentative at best.
B) The class Trematoda is probably paraphyletic.
C) Monogenea,Cestoidea,and Trematoda almost certainly comprise a monophyletic clade.
D) Turbellaria will probably be abandoned as a valid class designation because molecular studies suggest that it is paraphyletic.