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?

Correct Option: 1 only

Statement 1 is correct as 'Amil' was indeed the revenue collection official during the Delhi Sultanate. Statement 2 is incorrect because the Iqta system was an imported Islamic institution originating from West Asia (particularly under the Abbasids), not an ancient indigenous Indian institution. Statement 3 is incorrect because the office of 'Mir Bakshi' (head of the military department) was a creation of the Mughal administration, not the Khalji Sultans.