If continuing analyses confirm that ctenophores are the sister group to sponges plus eumetazoans, which of the following conclusions would be supported?

A)Nervous systems evolved convergently in ctenophores and eumetazoans.
B)Flow-through guts evolved convergently in eumetazoans.
C)Nematocysts evolved convergently in ctenophores and eumetazoans.
D)Sexual reproduction evolved convergently in ctenophores and eumetazoans.