Which one of the following was agreed Upon by the US , Britain , and the Soviet Union at the Yalta Conference

The Yalta Conference was a political summit between the Allies during World War II, held on February 4 to 11, 1945.  

The meeting decided that democratic elections would be held in Germany and the Nazi-controlled Central European nations would be liberated after the war, while the Soviet-backed governments in Poland and Yugoslavia were to be reorganized with greater democratic support.   Finally, this meeting ended with the Soviet commitment to attack Japan.

The meeting also discussed the future of the United Nations, and at the meeting it was decided that the victorious states (France, Great Britain, the United States and the Soviet Union) would have a veto in the Security Council.

d) he bring down boss tweed and tammany hall.

i am sure the answer is d