With reference to the teachings and impact of Guru Nanak, consider the following statements:
1. Guru Nanak preached monotheism.
2. The institution of the Khalsa was established by Guru Nanak.
3. The compilation of the Guru Granth Sahib was completed by Guru Nanak himself during his lifetime.
Which of the statements given above is/are correct?
1
1 only
2
2 only
3
1 and 3 only
4
None of the above