Answer-Which of the following is the position of the box F?

Box T was placed three boxes above box C which is neither placed at stack B nor in the same stack as box T. Box D was placed two boxes above box C in the same stack. Box Q was placed two boxes above box S and immediately below box G, which is placed to the west of box E. Box F was not placed at the bottommost position. Hence, case 2 gets eliminated.