at a particular crime scene the victims body is on the floor lying in a pool of blood with a knife stuck into the chest. bloody shoe print marks are everywhere. the drapes in the living room are wide open and the door to the bedroom is ajar. a table lamp is lying on the floor at the far end of the bedroom and the window is wide open. a half filled glass of water is it's on the kitchen counter. in the bathroom the tap is still running and the mirror is smashed into pieces. investigators think there is a possibility that an eyewitness was present when the perpetrator killed the victim. which four items at the crime scene are likely to have been disturbed by the eyewitness. justify your answer.