Consider the following statements about the classification and distribution of soils in Punjab:
1. The soils of Punjab are predominantly alluvial, classified into Aridisols, Entisols, Inceptisols, Alfisols, and Mollisols.
2. Alluvial soils in Punjab are primarily found in the central districts and are highly fertile, supporting intensive agriculture.
3. Sierozem soils are typically found in the southwestern parts of Punjab and are highly suitable for rice cultivation.
Select the correct code:
1
Only 1 and 2
2
Only 2 and 3
3
Only 1 and 3
4
1, 2, and 3