In the cladogram shown,the animals across the top are a lancelet,lamprey,salmon,lizard,and rabbit (from left to right).If the salmon,lizard,and rabbit are an ingroup,which animals would be an outgroup and which characteristics are necessary to be in the ingroup?

A)Lamprey and lancelet;notochord and vertebrae.
B)Lamprey only;vertebrae,hinged jaw,tetrapod,and mammary glands.
C)Lancelet and lamprey;hinged jaw,tetrapod,and mammary glands.
D)Lancelet,lamprey and salmon;hinged jaw,tetrapod,and mammary glands.
E)Lizard and rabbit;tetrapod and mammary glands.