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: Also, airline says bankruptcy filing possible in  #39;near term #39; SAN FRANCISCO (CBS.MW) -- The auditor for Delta Air Lines raised doubts about the future of the nation #39;s third-largest carrier in a regulatory filing late Wednesday as the company also sharpened its warning about filing for bankruptcy protection.

Business