Correct Option: A

The Maurya Empire was a geographically extensive Iron Age historical power in ancient India, ruled by the Mauryan dynasty from 321 to 185 BC. Originating from the kingdom of Magadha in the IndoGangetic plains (modern Bihar, eastern Uttar Pradesh and Bengal) in the eastern side of the Indian subcontinent, the empire had its capital city at Pataliputra (modern Patna). The Empire was founded in 322 BC by Chandragupta Maurya. The Gupta Empire was an ancient Indian empire which existed from approximately 320 to 550 CE and covered much of the Indian Subcontinent. The Kushan Empire was originally formed in the early 1st century AD under Kujula Kadphises in the territories of ancient Bactria around the Oxus River (Amu Darya), and later based near Kabul, Afghanistan. The Kanva dynasty was a Brahman dynasty founded by Vasudeva Kanva, the minister of Devabhuti, the last Sunga king in 75 BCE