Task: Question Answering
Input (English): What is 'unilateral acts'?
(A)They are acts that States perform as practice in the context of custom (B)They are acts creating unilateral legal obligations to the acting State (C)Unilateral acts are simply political acts of State devoid of any legal effect (D)Unilateral acts are those that State perform in order to be bound by a treaty
Output (English): B