C knows the answer by deducing D is not yelling out the answer.5.39.217.76. p% x! X8 P1 c* o
That means D is not sure the answer by seeing one white and one black.tvb now,tvbnow,bttvb/ b+ g. h/ }0 p3 S2 x3 f
C saw B is wearing the white, hence he is wearing the black |