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: Delta Air Lines Sees Loss Mushrooming (Reuters) Reuters - Delta Air Lines Inc.  on Friday\forecast a much wider third-quarter loss than Wall Street had\estimated because of weak domestic fares and a spike in fuel\costs, driven by record-high oil prices.

Business