Definition: In this task, you are given a news article. Your task is to classify the article to one out of the four topics 'World', 'Sports', 'Business', 'Sci/Tech' if the article's main topic is relevant to the world, sports, business, and science/technology, correspondingly. If you are not sure about the topic, choose the closest option. Note that URLs in the text have been replaced with [Link].
Input: Alcoa Cautions About Below-Market Offer  NEW YORK (Reuters) - Alcoa Inc. &lt;A HREF="[Link] target=/stocks/quickinfo/fullquote"&gt;AA.N&lt;/A&gt;, the world's biggest  aluminum producer, on Monday cautioned its shareholders about  an unsolicited, below-market "mini-tender" offer being made by  Toronto-based TRC Capital Corp. to buy up to 3.5 million of its  shares.

Business