The correct options are
A Archaeological sources come from archaeological sites excavated in the Gangetic valley.
B Literary sources are religious books composed by Brahmins, Buddhists, Jain monks, Strabo and Herodotus.
C Some examples of archaeological sites are Delhi, Atranjikhera, Kausambi, Patna and Rajgir.
D Some examples of literary sources include Upanishads, Dharmasutra, Digha Nikaya and Majjhima Nikaya.
There are two sources- archaeological and literary to know about mahajanapadas. Archaeological sources come from archaeological sites excavated in the Gangetic valley. These sites include Delhi, Atranjikhera, Kausambi, Patna and Rajgir. Literary sources are religious books composed by Brahmins, Buddhists, Jain monks and foreign writers such as Strabo and Herodotus. Examples of literary sources are Upanishads, Dharmasutra, Digha Nikaya and Majjhima Nikaya.