C knows the answer by deducing D is not yelling out the answer.
' o+ l0 J$ O8 C' y5 `1 L* X: Utvb now,tvbnow,bttvbThat 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。: \9 z6 o) E* n9 y" U# Z
C saw B is wearing the white, hence he is wearing the black |