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: New Trojan Sends Spam An ingenious new Trojan is circulating that hijacks PCs and uses them to send SMS-based spam to mobile phones. After a PC has been infected, the Delf-HA Trojan contacts a Web site for details on which spam 

Sci/Tech