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 4: FDA Wants More Safety Data on Merck Drug The Food and Drug Administration told Merck  amp; Co. that it requires further safety and efficacy data before it will approve its successor drug to now defunct pain reliever Vioxx, the pharmaceutical maker announced Friday.

Business