Which of the following soils is most suitable for cultivation of cereals?

Alluvial soils is most suitable for cultivation of cereals. The soil is generally covered by tall grasses and forests, as well as a number of crops, such as rice, wheat, sugarcane, tobacco, maize, cotton, soyabean, jute, oilseeds, fruits, vegetables, etc. This soil has very soft strata with the lowest proportion of nitrogen and humus but with an adequate amount of phosphate.