The distinctive character of tropical red soil is BEST described as?
-
A.
deep, highly leached,with high kaolin clay and iron content -
B.
deep, deep, humus-rich, with high kaolin clay and abundant iron concretions -
C.
deep, deep, humus-rich, dark-coloured, with distinct cacareous horizons -
D.
deep, acidic with high kaolin clay content and weatherable minerals