In each of the following questions, a word has been used in three different sentences. Choose the option corresponding to the sentence(s) in which the usage of the word is grammatically and contextually correct. ANNUL ​I. The supreme court issued a definitive landmark ruling to completely annul the controversial legislative amendment, declaring it fundamentally unconstitutional and void ab initio.
II. The corporate research team realized that adding the catalyst at a sub-zero temperature would effectively annul the chemical reaction, rendering the entire solution completely inert.
III. Despite months of bitter, high-stakes arbitration, both multinational conglomerates agreed to annul their pre-existing trade agreement and forge a fresh, mutually beneficial partnership.