Home / Medieval History Batch / MED_REL_2017_51 Sikhism and Language UPSC Archival Analysis Exam Year 2017 Evidence Source Link ID: MED_REL_2017_51 Ref: History of the Sikhs by Khushwant Singh Which of the following Guru started 'Gurumukhi'? A. Guru NanakB. Guru AmardasC. Guru RamdasD. Guru Angad