A Statistician Measures the Difference in Songbird Warble Variation in 25

A statistician measures the difference in songbird warble variation in 25 mockingbirds, both before and after nutritional supplementation with Dr. Petit Oiseau's Musical Bird Seed. Warble variation is determined by a cranky librarian, who characterizes the birds, before and after treatment, as one of the following "Lots of Notes There!" "Fair Variety," and "Quite the Redundant Little Song." What considerations determine choice of a test for this research?

A) The sample size is small to moderate.
B) There is one group of birds, and all receive the treatment.
C) A before-after type of design is used.
D) The independent variable is nominal level.
E) Birds are divided into two groups.
F) The dependent variable is ordinal level.
G) The dependent variable is ratio level.