Saline soils is soils that contain a harmful amount of salt

Saline soils is soils that contain a harmful amount of salt, which statement is true about saline soil?

Group of answer choices

A. high CaCO₃ levels near the soil surface

B. sodium adsorption ratios of 13 or higher

C. electrical conductivity of standard saturated paste is more than 4 dS/m

D. low chloride and sulphate contents