Non-Vertebrate Chordates,tunicates and Lancelets,differ from Other Chordates in That

Non-vertebrate chordates,tunicates and lancelets,differ from other chordates in that

A) They do not have a notochord.
B) They have gills while other chordates have lungs.
C) They do not have jaws while all other chordates do have them.
D) The notochord of non-vertebrate chordates does not become a vertebral column.
E) Non-vertebrate chordates do not have a internal bony skeleton while all other chordates do.