The correct option is A Advait Vedant
Advaita Vedanta refers to the non-dualistic school of Hindu philosophy, which is derived mostly from the Upanishads. It believes that Brahman is the one and only reality and everything else is a mere appearance, projection, formation or illusion. It focuses on the concepts: Brahman, atman, vidya (knowledge), avidya (ignorance), maya, karma and moksha.