Each of the following four sets (A-D) contains three animals of a phylum and one odd animal. Select the option that identifies the odd animal in each series.

A.	Adamsia, Gorgonia, Euspongia, Physalia
B.	Ascaris, Ancylostoma, Wuchereria, Fasciola
C.	Ophiura, Pila, Sepia, Aplysia
D.	Locusta, Loligo Limulus, Laccifer

The odd one in A is Euspongia which is included under phylum Porifera; the rest (Adamsia, Gorgonia, Physalia) are included under Cnidaria. 

The odd one in B is Fasciola of phylum Platyhelminthes; the rest (Ascaris, Ancylostoma, Wuchereria) are included under Aschelminthes. 

The odd one in C is Ophiura of phylum Echinodermata: the rest ( Pila, Sepia, Aplysia) are included under Mollusca. 

The odd one in D is Loligo of phylum Mollusca; the rest (Locusta, Limulus, Laccifer) are included under Arthropoda.