Which of the following combinations of phylum and description is incorrect?

(A) Porifera-gastrovascular cavity; mouth from blastopore.
(B) Platyhelminthes-Flatworms; GVC; Acoelomate.
(C) Nematoda- Roundworms; Pseudocoelomates
(D) Echinodermata- bilateria; coelom from archenteron