One Day After a Biology Class Four of Your Friends

One day after a biology class four of your friends argue about the difference between phylogeny and systematics.Which friend is right?

A) Friend A states that systematics and phylogenies are really the same,one is more recent than the other,but basically they are the same.
B) Friend B says that systematics is the same as cladistics and cladistics is reconstructing clades,which ultimately lead to the development of phylogenies.
C) Friend C argues that systematics is the actual collecting and cataloguing of specimens into museums that can be used later by scientists to construct clades and phylogenies.
D) Friend D says that the way she remembers is that systematics is the reconstruction and study of phylogenies.