In which of the following options, all belong to the same phylum?
Pennatula, Meandrina, Adamsia - Cnidaria.
Pila, Sepia – Mollusca; Salpa - Chordata.
Macropus, Pteropus – Chordata; Octopus – Mollusca
Wuchereria – Aschelminthes; Hirudinaria – Annelida; Cucumaria – Echinodermata