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: Nortel #39;s Accounting Under Investigation Nortel Networks is under investigation by the Royal Canadian Mounted Police for irregularities in past accounting practices. Announcement of the investigation -- two days before its release of first- and second-quarter financials -- caused ...

Business