C knows the answer by deducing D is not yelling out the answer.tvb now,tvbnow,bttvb+ p1 W! D, p& |7 O+ |8 f" I
That means D is not sure the answer by seeing one white and one black.TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。/ V! o g. g5 U
C saw B is wearing the white, hence he is wearing the black |