Which of the Following Best Describes the Canadian System of Soil

Multiple Choice

Which of the following best describes the Canadian System of Soil Classification?

A) Soil variation is too complex for a single classification system,so many regional classification systems are used within the Canada.
B) The Canadian System of Soil Classification was developed specifically for the variations that exist across the extremes of the country.
C) The system was finalized in 1975 and no additional changes to it will be made.
D) It is primarily based on pedogenic regimes in which each soil-forming process is attached to a climatic region.