C knows the answer by deducing D is not yelling out the answer.
/ a" ^3 w- r+ h& Q# ^5 A* L; ltvb now,tvbnow,bttvbThat means D is not sure the answer by seeing one white and one black.
" D8 Z/ U4 j- {) ?7 D& J4 R. Rwww3.tvboxnow.comC saw B is wearing the white, hence he is wearing the black |