To what does the term "BATNA" refer?

A)an acronym for the best situation you'd be in the absence of a negotiation into which you are about to enter.

B)an acronym for preparation document listing your interests and those of your counterpart

C)an acronym for the brainstorming process that generates win/win options

D)an acronym for a baseball statistic that compares switch hitters' success rates from both sides of the plate