B. founder of Khalsa, the inner council of the Sikhs in 1699
C. author of Dasam Granth
D. All the above
Correct Answer
All the above
Explanation
Guru Gobind Singh (1666-1708). The 10th Guru of the Sikhs who founded the Khalsa the inner council of the Sikhs in 1699. He is said to be the author of Dasam Granth.