What Is the Difference Between Libel and Slander

What is the difference between libel and slander?

A) Slander involves printed statements, while libel involves spoken statements (including in-person statements and recorded statements in audio or video) .
B) Libel involves printed statements, while slander involves spoken statements (including in-person statements and recorded statements in audio or video) .
C) Libel involves statements that are false, while slander involves statements that are unpleasant but true.
D) Libel is a concept applied only to professional relationships, while slander is a concept applied only to personal relationships.