A $14-$m thick unsaturated soil layer has a total unit weight of $19k\frac{N}{m^3},$ void ratio of $0\mathrm{.}43,$ and Poisson's ratio $0\mathrm{.}32.$ The effective saturation parameter $$ is assumed as $0\mathrm{.}4.$ The particle size distribution curve of the soil is as shown. Determine the net normal stress and matric suction tensors at points A$,$ B$,$ and C under the hydrostatic condition. Point A is $2m$ below the ground surface, Point B is in the middle of the unsaturated soil layer, and Point C is at the ground water table.