The Most Efficient Way of Managing Dryland Salinity Is

The most efficient way of managing dryland salinity is

A) clearing, to allow water to enter recharge zones.
B) switching to shallow-rooted crops to avoid pulling water to surface.
C) irrigating, to flush out salt.
D) revegetating land with deep-rooted plants to lower the water table.
E) planting of crops that require little water.