The correct option is C Mathura
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Cities that were part of Guru Nanak Dev Ji's first udasi were: Sayyidpur, Lahore, Sialkot, Panipat, Delhi, Haridwar, Banaras, Gaya, Patna, Kamroop in Assam, Jagannath Puri, Dhaka, Bhopal, Chanderi and Mathura.