What Is the Strategy Used by Negotiators to Search for Differences

What is the strategy used by negotiators to search for differences in beliefs and abilities to leverage opportunities for joint gain called?

A) analyzing cultural differences to identify differences in values that expand the pie
B) recognizing that the other party may not share your view of what constitutes power
C) finding out how to show respect in other cultures
D) anticipating differences in strategy and tactics that may cause misunderstandings