Read the article and select the best answer. Article: What can help you make a fortune in the future? Graduating from a top university might not be enough. A new study from the University of Essex in Britain has shown that the more friends you have in school, the more money you'll earn later. The idea that popularity could have a serious impact on one's earning potential shouldn't come as too much of a surprise. The researchers noted that if you want to get ahead in life, social skills and networking are easily as powerful as talent and hard work. "If a person has lots of friends, it means that he or she has the ability to get along with others in all kinds of different situations," said Xu Yanchun, 17, from Nantou High School in Shenzhen, who totally agreed with the recent finding. "Also, friends always help each other. They not only create wider social circles for you but lift your mood when you occasionally feel depressed," said Xu. She believed that all this helps you "earn a higher salary". Maybe that's why some people think the younger generations are in the age of Friendalholism . A woman even complained that the networking website Facebook's 5,000-friend limit was too low for her large reserve of social contacts. But what does a friend mean? Should friends be regarded as a form of currency? "Call me uncool, but I think of a friend as an actual person with whom I have an actual history and whom I enjoy actually seeing. It seems, however, that this is no longer the definition of 'friend'," said Meghan Daum, who works with the Los Angeles Times in the US. Question: What's the main idea of the passage? Options: A: The passage mainly tells us something about the friendship. B: Friendship plays a more important part in our daily life than anything else. C: Friends are currency. D: Friends give you success.
The answer to this question is:
D