Vladimir Lenin Arrived in Petrograd in April 1917 Because

Vladimir Lenin arrived in Petrograd in April 1917 because

A) he had been imprisoned in Siberia until only a few weeks before.
B) he had to sneak in from Switzerland, which he did with the help of French secret agents.
C) the Germans sent him there in an effort to destabilize Russia.
D) Americans brought him there by boat from Alaska, in order to destabilize Russia.
E) after the February Revolution, the Cheka needed several weeks to secure the city.