An N:M Relationship Cannot Be Written as N:N, Because ________

An N:M relationship cannot be written as N:N, because ________.

A) N:N is similar to 1:N relationship, which is a one-to-many relationship
B) N:N implies that the relationship is between two of the same kind of entity
C) N:N implies that there are the same number of entities on each side of the relationship
D) N:N implies that the relationship is within a single entity