Following the Death of Alexander I in 1825, Russian Society

Following the death of Alexander I in 1825, Russian society under Nicholas I became

A) the most liberal of the European powers.
B) rapidly industrialized.
C) an industrial power after the abolition of serfdom.
D) increasingly influenced by ultra-conservative societies, such as the Northern Union.
E) a police state, as the czar feared both internal and external revolutionary upheavals.