An athlete runs 300 m east along a straight track, then immediately turns around and runs 100 m west. Which statement about her distance and displacement from the starting point is most accurate?
(a) Her distance is 400m and her displacement is 400m east.
(b) Her distance is 400m and her displacement is 200m west.
(c) Her distance is 400m and her displacement is 200m east.
(d) Her distance is 200m and her displacement is 200m east.