Which of the following statements about Adigranth is correct?
1. Adi Granth was written in Brahmi script.
2. This book contains the teaching of Adi Sankaracharya.
3. Guru Arjun Dev Ji composed and collected the Adi Granth.
1
1 and 2 only
2
2 and 3 only
3
3 only
4
1, 2 and 3