C knows the answer by deducing D is not yelling out the answer.5.39.217.77* Q6 K9 @. z2 Q1 G
That means D is not sure the answer by seeing one white and one black.tvb now,tvbnow,bttvb4 h. E0 s7 ^7 c; K+ D: V, D
C saw B is wearing the white, hence he is wearing the black |