When Marcus Rides the Elevator at Work,he Always Stands Facing

When Marcus rides the elevator at work,he always stands facing the back of the elevator car.Although this goes against standard social practice and makes his coworkers uncomfortable,it is more likely to be psychopathology if it is

A) impairing good daily functioning.
B) odd,but not maladaptive.
C) caused by a stressor.
D) acceptable in different cultures.