Which Sufi scholar is known for his work on the ‘Fana’ (annihilation) and ‘Baqa’ (subsistence) in divine unity?

A. Al-Hallaj
B. Ibn Arabi
C. Jalaluddin Rumi
D. Al-Ghazali

Answer: Al-Hallaj


Additional Information: Al-Hallaj is known for his work on the 'Fana' (annihilation) and 'Baqa' (subsistence) in divine unity.