Which of the Following Lists of Soil Categories Gives the Proper

Multiple Choice

Which of the following lists of soil categories gives the proper hierarchy for the Soil Taxonomy system-from the largest grouping to the smallest unit (i.e., from least to most in terms of the number of soils included) ?

A) orders, suborders, soil series, small groups
B) soil orders, suborders, great groups, subgroups, families, series
C) pedon, polypedon, horizons, profiles
D) epipedon, subsurface diagnostic horizon