nna went for a walk before class. she walked north 4.0 km and then west 2.0 km. what was her displacement?
A. 6.0 km at 26.6 degrees west of due north
B. 3.5 km at 0.46 degrees west of due north
C. 4.5 km at 26.6 degrees west of due north
D. 4.5 km at 26.6 degrees east of due north
E. 6.0 km at 0.46 degrees west of due north
