C knows the answer by deducing D is not yelling out the answer.
% G/ s4 Y) `8 [9 P( V# O公仔箱論壇That means D is not sure the answer by seeing one white and one black.
2 E2 B1 V. T, M2 l! Stvb now,tvbnow,bttvbC saw B is wearing the white, hence he is wearing the black |