With reference to Sufism in Indian history, consider the following statements.

1. Shaikh Ahmad Sirhindi was a contemporary of Ibrahim Lodi.

2. Shaikh Nasiruddin Chirag-IDehlavi was a disciple of Shaikh Nizamuddin Auliya.

3. Aurangzeb was a contemporary of Shaikh Salim Chishti.

4. The Qadiri order of Sufis was first introduced in India by Shaikh Niamatullah and Makhdum Muhammad Jilani.

Which of these statements are correct?

[IAS (Pre) 2002]