Which one of the following statements about certain given animals is correct?
Flatworms are pseudocoelomates.
Molluscs are coelomates.
Insects are acoelomates.
Roundworms are acoelomates.
Insects (Arthropods) are coelomates.
Flatworms (Platyhelminthes) are acoelomates.
Molluscs (Mollusca) are coelomates.
Roundworms (Aschelminthes) are pseudocoelomates.