The correct option is B Kalu Mehta
Guru Nanak Dev was born on 15 April 1469 to Mata Tripta and Mehta Kalu in Talwandi, a village in the Sheikhupura district, to the west of Lahore. He was the founder of Sikhism and the first Guru of the Sikhs. He believed in the values of equality, fraternity, goodness, and virtue. The basis of Sikhism lies in the teachings of Guru Nanak and his successors.