Consider the following statements regarding the market regulations of Alauddin Khalji:
1. He established three separate markets in Delhi for food grains, costly cloth, and horses, slaves & cattle.
2. The markets were placed under the control of high officers called 'Diwan-i-Riyasat' and 'Shahna-i-Mandi'.
3. The primary motive behind these strict price controls was the general welfare and economic prosperity of the common people.
Which of the statements given above is/are correct?