C knows the answer by deducing D is not yelling out the answer.
2 G( w4 K7 F( A& h9 E公仔箱論壇That means D is not sure the answer by seeing one white and one black.www2.tvboxnow.com' y n$ c1 x, ^! U# L+ _, U
C saw B is wearing the white, hence he is wearing the black |