Consider the following statements and select the correct answer using the code given below: 1. A treaty is an agreement under international law entered into by sovereign states and international organizations. 2. A treaty may also be known as an (international) agreement, protocol, convention, pact or exchange of letters. 3. A party to treaty or contract that fails to live up to their obligations can be held liable under international law. 4. An amendment to a treaty or convention is known as a protocol.

• A. 1, 2 and 3 are correct
• B. 1, 2 and 4 are correct
• C. 2, 3 and 4 are correct
• D. 1, 2, 3 and 4 are correct