Why Does Irrigated Farmland Get More and More Salty Over

Multiple Choice

Why does irrigated farmland get more and more salty over time?

A) Salts and minerals are deposited from water by evaporation.
B) Salt water is used to irrigate the lands.
C) Silty water lays down layers of organic matter, which contain a large degree of charged particles and salts.
D) The plants extract the minerals and exchange them for salty ions like sodium.
E) all of the above