Chess Equilibrium

Two players A and B of master strength are playing. At some point the game is stopped and a proposition is made to them to adjust the position to one that is equal. 

what can be deduced about the point at which the game was stopped

A) if both players accept the proposition

B) if proposition is acceptable to A but not B

C) if proposition is acceptable to B but not A

a

Lol. Its not a multi choice question.

fool

Come now, I imagine if you can fathom the complexities of chess, you can express your displeasure more intelligently. Do better. 

Read the challenge again, take your time to think about the problem and then conjure a solution. That is chess at its simplest.