Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the questions.

    Wikipedia is an encyclopaedia that is available on the Internet and what people love about it is that it can be edited by absolutely everybody.

When and how did it start? It was founded in 2001 by a guy called Jimmy Wales. It started as a fancy idea, a kind of hobby and everybody is surprised how popular it has become and how many computer scientists it has attracted. It has got a collection of about 1.8 m articles, the majority of which are in English; however, one can find some articles in over 200 languages. If it was a business, it would earn lots of money.

    How is it possible that articles that can be changed by anyone are correct? The Wikipedia is based on wikis - a special software which lets everyone modify a webpage and it is true that anyone can change the information on the page if they think it's incorrect. But, the Wikipedia has a team of over 13,000 people who are experts in different fields and who correct any inaccurate information sent by people.

    Is it error-free? One may say so. Recently, for example, the British journal Nature looked at the scientific information in Wikipedia and confirmed it was very reliable and that they didn't find many errors. It was very good news for the founder as well as for all the users.

Why is it becoming so popular? Like the whole idea of the Internet, it's also quick and available to everyone. The greatest thing of all is that it is free. Some people also stress that it's fun to be able to add what you know to the information on the net. IT specialists believe it has a very bright future and most claim it's the most brilliant invention ever.

According to the passage, Wikipedia________.