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: UAL, Creditors Agree to 30-Day Extension (Reuters) Reuters - UAL Corp.'s (UALAQ.OB) United Airlines\on Friday said it has agreed with its creditors committee to a\30-day extension on the period in which it can file an\exclusive bankruptcy reorganization plan.

Business