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: Merck stock plummets on drug news The share price of US drugs giant Merck falls to an eight-year low after it announces that it has been forced to withdraw a key drug on side effect fears.

Business