To which one of the following schools of philosophy did Kumarila Bhatta and Prabhakara belong?

Kumarila Bhatta and Prabhakara were the two most prominent figures of the Purva-Mimamsa school of Indian philosophy [1]. Purva-Mimamsa, often referred to simply as Mimamsa, is one of the six orthodox (astika) systems that accept the authority of the Vedas. While the system was originally founded by Jaimini through the Mimamsa Sutras, it reached its intellectual peak around the 7th century CE through the works of Kumarila Bhatta and Prabhakara. These two scholars founded the two major sub-schools of Mimamsa: the Bhatta school and the Prabhakara school [1]. Their philosophy focuses on the interpretation of Vedic rituals (Karma-kanda), the nature of dharma, and epistemology, specifically defending Vedic authority against Buddhist idealism. In contrast, Uttara-Mimamsa refers to Vedanta, while Lokayata and Madhyamika represent materialist and Buddhist schools respectively [1].

Sources

1. [1] https://ia600108.us.archive.org/33/items/in.ernet.dli.2015.199820/2015.199820.Study-Of-Difference-Between-Bhatta-And-Prabhakara-Schools-Of-Mimamsa.pdf