Which Statement About Russia's Federal System Is INCORRECT

Which statement about Russia's federal system is INCORRECT?

A) Russia's federal units are represented at the national level by the Federation Council, the members of which are directly elected in regional elections.
B) Putin took a number of steps to bring Russian regions under tighter federal control.
C) The Russian constitution places many powers in the hands of the central government, while most others are considered to be shared jurisdiction between the regions and the federal government.
D) The basis of some Russian federal units is ethnicity.
E) Some cities are designated as having federal status.