Which of the following statements is/are true about economic importance of Deccan plateau?

1. Deccan plateau has black soil suitable for the growth of cotton.

2. The black soils of Deccan plateau are agriculturally infertile hence require high doses of fertilizers thus fertilizer industry has been developed in this region.

3. Deccan plateau is the result of basaltic lava flow thus is source of ferrous minerals.

Select the correct answer using the codes given below.