Consider the following statements with reference to the taxation under Delhi Sultanate:

1. Zakat was the tax on the property and land of Muslims, meant essentially for religious and charitable purposes.

2. Jizya, a tax imposed on non-Muslims for the protection given by the state to their life, property and place of worship.

3. Kharaj was the most important tax or source of income to the state which was levied on mines, and treasure troves.

Which of the statements given above are correct?