The correct option is B Guru Arjan Dev Ji added Miri and Piri to his attire.
Hargobind Singh, the son of Guru Arjan Dev Ji, added two swords, Miri and Piri to his attire following his father's martyrdom. Miri stands for temporal power, and Piri stands for spiritual power. Guru Arjan De Ji welcomed Khusrau, Jahangir's rebel son. He also constructed Hargobindpur on the banks of the river Beas and named it after his son. Guruji composed the Adi Granth Sahib, the holy book of Sikhs in 1604 comprising of hymns, ballads and prayers.