Social Bookmarking Sites Allow Users to Do All of These

Multiple Choice

Social Bookmarking sites allow users to do all of these things except : 

A) store, organize, search and mange "bookmarks" of web pages.
B) organize them by tags, single word descriptors that categorize the bookmark.
C) search social bookmarking sites using the descriptor to find content and bookmark that content within their own accounts.
D) monetize their traffic.
E) all of these are correct.