Which Statement Reflects a Tenet of Communication Privacy Management Theory

Which statement reflects a tenet of Communication Privacy Management Theory (CPM) ?

A) Sharing information has not only psychological benefits, but physical ones, as well.
B) All information about a person can be pictured as a series of layers, like an onion.
C) Self-disclosure to create intimacy is the most important factor in a relationship.
D) Withholding information can be as valuable for relationships as self-disclosure.