What Is a Problem with Using Someone Else's Material Under

Multiple Choice

what is a problem with using someone else's material under the fair-use concept?

A) Citations can become lengthy and difficult to manage.
B) Creative Commons stipulations do not apply to fair use.
C) Fair use is a general concept and not a strict set of rules you can follow with absolute certainty.
D) Fair use applies to written works but not to visual images or music.