(a) Contains large percentage of clay material
(b) exhibits high compressibility
(c) Both (A) and (B) are true
(d) Only (B) is true
Ans. (c) : Black cotton soil

Explanation:-

It is residual deposits formed from basalt or trap rocks. It is suitable for growing cotton.
Black cotton soils are clay of high plasticity. This contain the mineral montmorillonite. The soils have high shrinkage and swelling characteristics. The shear strength of the soil is extremely low. The soil is highly compressible and have very low bearing capacity.