Right reaction/Spontaneous reaction

Black is a piece up, but his king stands exposed and if all major pieces are exchanged White's b-pawn might become dangerous. How would you assess the position after 38.Rc8+ from White? Black...
A) wins if he takes
B) wins if he does not take
C) draws no matter what he does

Oliver Reeh in ChessBase Magazine
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ChessBase Magazine #164 (Feb./March)

Introduction by Karsten Müller
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