In Mammals, the Presence of Four Limbs Is ________, and Hair

Multiple Choice

In mammals, the presence of four limbs is ________, and hair is ________.

A) a shared derived character; a shared ancestral character that places mammals in the tetrapod clade
B) a shared ancestral character; a shared derived character unique to mammals
C) a homologous feature; an analogous feature
D) monophyletic; parsimonious