Which of the Following Is NOT True of Agriculture and Agricultural

Which of the following is NOT true of agriculture and agricultural production in North Africa/Southwest Asia?

A) Until the twentieth century, most agricultural production occurred in coastal/upland zones and river valleys.
B) Most of the people of North Africa/Southwest Asia eat imported food.
C) Irrigation projects often contribute to soil degradation through salinization.
D) Drip irrigation techniques developed by Saudi Arabia are now in wide use throughout the region as a way of combating salinization.