Answer:
Russia lost territory under the terms of the treaty ( B )
Explanation:
The Russian leaders were unhappy with the treaty of Versailles because they lost territory under the terms of the treaty . the treaty of Versailles was a peace treaty signed to mark the end of world war war I between the allied forces and Germany.
The treaty punished Germany for causing the world war and also as part of the terms agreed in the treaty some regions which were under the control of Russia were ceded back to the owners and this made Russian leader unhappy.
