Consider the following statements: 1. In the revenue administration of Delhi Sultanate, the in-charge of revenue collection was known as 'Amil'. 2. The Iqta system of Sultans of Delhi was an ancient indigenous institution. 3. The office of 'Mir Bakshi' came into existence during the reign of Khalji Sultans of Delhi. Which of the statements given above is/are correct?

Statement 1 is correct because 'Amil' was the designated official responsible for revenue collection at the pargana level during the Delhi Sultanate. Statement 2 is incorrect because the Iqta system was a West Asian administrative practice introduced by the Turks, not an indigenous institution, while Statement 3 is false as 'Mir Bakshi' was a Mughal office, whereas the Sultanate equivalent was the 'Ariz-i-Mumalik'. This question tests the core concept of administrative terminology and the institutional evolution of the Delhi Sultanate versus the Mughal Empire.