The correct answer is: Both A & B.
Jain and Buddhist literature were written in both Prakrit and Pali. Prakrit is a group of Middle Indo-Aryan languages that were spoken in India from the 6th century BCE to the 12th century CE. Pali is a Prakrit language that was used as the liturgical language of Theravada Buddhism.
Prakrit is a group of Middle Indo-Aryan languages that were spoken in India from the 6th century BCE to the 12th century CE. Prakrit is a direct descendant of Sanskrit, and it is the language in which many of the early Buddhist and Jain texts were written. Prakrit is also the language of the plays of Kalidasa, one of the greatest Indian poets and playwrights.
Pali is a Prakrit language that was used as the liturgical language of Theravada Buddhism. Pali is a relatively conservative form of Prakrit, and it is very similar to the language that was spoken in India in the 6th century BCE. Pali is the language of the Tipitaka, the sacred texts of Theravada Buddhism.
Both Prakrit and Pali are important languages in the history of Indian literature and religion.