Which of the Following Statements Describes the Agricultural Technique Known

Which of the following statements describes the agricultural technique known as dry farming?

A) Dry farming was developed by Mormons in the area near the Great Salt Lake.
B) It involved deep planting and quick harrowing after rainfalls.
C) Its chief benefit was that it did not require new machinery.
D) Dry farming was feasible only on small farms of three hundred acres or less.