The correct option is B Ashoka
Kalinga war was a very significant event in the life of Ashoka which shaped and influenced his future conduct. As stated in 13th major rock edict of Ashoka, he was deeply saddened by the huge loss of lives in Kalinga war and gave up bloodshed and violence. Thereafter, Ashoka primarily focused on spreading his message of Dhamma and the concept of Dhammavijaya instead of military victories.