Explanation

Option A is correct: At Kanaganahalli (Kanganahalli), near Sannati on the banks of the Bhima River in Kalaburagi (Gulbarga) district, Karnataka, archaeological excavations revealed a ruined Buddhist stupa complex containing a celebrated relief slab:

– The carved limestone slab portrays Emperor Ashoka accompanied by his queens and female attendants.
– Beneath the carved image is an explicit label in Brahmi script reading ’Ranyo Ashoko’ (King Ashoka).
– It represents the only known sculptured relief portrait of Ashoka with his name inscribed directly on the stone.

Therefore, the inscription is found at Kanganahalli — Option A.