Echidnas, Wombats and Ghost Bats Have Hair and Suckle Their

Multiple Choice

Echidnas, wombats and ghost bats have hair and suckle their young with milk from mammary glands, and these characteristics distinguish them from other amniotes, including their ancestors, early reptiles. Wombats and ghost bats have separate anal and urogenital openings, and mammary glands with teats. Wombat young are born at an early embryonic stage and complete their development attached to teats inside a protective pouch.
In constructing a phylogeny for wombats, echidnas and ghost bats, having hair would be considered a

A) plesiomorphic character.
B) apomorphic character.
C) synapomorphic character.
D) autapomorphic character.
E) phylogenetic character.