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: UPDATE 2-US pension agency #39;s deficit swells to \$23.3 bln The deficit at the federal agency that rescues failed US corporate pensions more than doubled to \$23.3 billion in fiscal year 2004, officials said on Monday, with analysts largely blaming bankrupt airlines.

Business