Select all the correct answers.
Select the three features that video-sharing sites share in common.
a. Users can comment on videos.
b. Users can edit other people's videos.
c. Users can upload videos in multiple file formats, including MP4, MPEG, and MOV.
d. Users can use music from any source without worrying about copyright rules.
e. Users can add tags to videos; they can tag subjects, locations, and even other users.