There is only one edict, in which Ashoka refers himself as King of Magadha

Q. There is only one edict, in which Ashoka refers himself as King of Magadha (Laja Magadhe.) Identify the edict from the following:
(a) Minor Rock Edict of Maski
(b) The Queens Edict
(c) Bhabhru Edict
(d) Dhauli Pillar Inscription
Ans: (a) Minor Rock Edict of Maski