Who said that in every age God the Almighty selects some one from among men and gives over to him the charge of the well-being of the world and the comfort and tranquility of the human race after duly furnishing him with the act of the Government:
A. Al-Farabi
B. Ibn-e-Khaldun
C. Al-Ghazali
D. Nizam-ul-Mulk Tusi