Your Professor Wants You to Construct a Phylogenetic Tree of Orchids.She

Your professor wants you to construct a phylogenetic tree of orchids.She gives you tissue from seven orchid species and one lily.What is the most likely reason she gave you the lily?

A) to serve as an out-group
B) to see if it's a cryptic orchid species
C) to see if the lily and the orchids show all the same shared derived characters (synapomorphies)
D) to see if you were paying attention