The correct option is C 1500 A.D.
Travels or Divine Journeys of Guru Nanak Ji called Udasis. During these Udasis(religious tours), he visited holy places of different faith, met people of various faiths, professed his newfound path. In his first Udasi, he started from Sultanpur in 1500 and went to his village Talwandi to meet and inform his parents about his long journey.