In many upper-class Egyptian homes, French was spoken within the family, just as it had once been among the Russian aristocracy.
(A) just as it had once been among the Russian aristocracy (OA)
(B) just like it once been among the Russian aristocracy
(C) just as Russian aristocracy had once done
(D) similar to what the Russian aristocracy had once done
(E) like what had once been done by the Russian aristocracy


Why not C?