In which one of the following is the genus name, its two characters and its phylum NOT correctly matched?
- APeriplaneta: (a) Jointed appendages (b) Chitinous exoskeleton — Arthropoda
- BPila: (a) Body segmented (b) Mouth with radula — Mollusca
- CAsterias: (a) Spiny skinned (b) Water vascular system — Echinodermata
- DSycon: (a) Pore bearing (b) Canal system — Porifera