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: E-shopping: When  Things Don't Click Aregular Amazon customer, Yvette Thompson has found shopping online to be mostly convenient and trouble-free. But last month, after ordering two CDs on Amazon.com, the Silver Spring reader discovered on her bank statement that she was double-charged for the \$26.98 order. And there was a \$25 charge that was a mystery.

Sci/Tech