Aatvi tribe of Jharkhand was described in the rock inscription of

The correct answer is: A. Chandragupta Maurya

The Aatvi tribe of Jharkhand was described in the rock inscription of Chandragupta Maurya. The inscription is located in the village of Maski in Karnataka. The inscription is dated to the 3rd century BCE. The inscription describes the conquests of Chandragupta Maurya. The inscription also mentions the Aatvi tribe. The Aatvi tribe is described as a fierce tribe that lived in the forests of Jharkhand. The Aatvi tribe was known for their archery skills. The Aatvi tribe was also known for their resistance to the Mauryan Empire.

The other options are incorrect because:

• Ashoka was a Mauryan emperor who ruled in the 2nd century BCE. The Aatvi tribe was described in the rock inscription of Chandragupta Maurya, who ruled in the 3rd century BCE.
• Samudragupta was a Gupta emperor who ruled in the 4th century CE. The Aatvi tribe was described in the rock inscription of Chandragupta Maurya, who ruled in the 3rd century BCE.
• Singh Deo was a king of the Chota Nagpur region who ruled in the 16th century CE. The Aatvi tribe was described in the rock inscription of Chandragupta Maurya, who ruled in the 3rd century BCE.