C knows the answer by deducing D is not yelling out the answer.
9 P3 c! F, @5 W" c% w/ P) R" M2 p5.39.217.76That means D is not sure the answer by seeing one white and one black.
& C) D9 W U; F* `, y2 L0 M6 v公仔箱論壇C saw B is wearing the white, hence he is wearing the black |