The correct option is B Anguttara Nikaya
Sixteen states or Mahajanapadas are mentioned in the Buddhist Jatakas, Anguttara Nikaya. The Anguttara Nikaya is a Buddhist scripture, the fourth of the five nikayas, or collections, in the Sutta Pitaka, which is one of the "three baskets" that comprise the Pali Tipitaka of Theravada Buddhism.