Which of the following statements regarding soil is/are correct?
1. Alluvial soils are rich in nitrogen content.
2. Black soils are rich in iron and lime but deficient in nitrogen.
3. Laterite soils are rich in iron and aluminium but deficient in nitrogen and potassium.
[CDS II 2016]
Select the correct answer using the code given below
1) 1 and 2 only
2) 3 only
3) 2 and 3 only
4) 1, 2 and 3
3) 2 and 3 only