According to the Text, Which Is the Most Appropriate Conclusion

According to the text, which is the most appropriate conclusion to draw regarding teenagers' use of social media, such as Facebook?

A) only a minority of U.S. teens use these media to a significant degree
B) use of online media does not appear to be affecting friendship patterns
C) teens who use online media have many more friends than those who don't
D) the quality of friendships suffer when teens use online social media