Choose the next item in the visual series: An arrow pointing North, then pointing East, then pointing South, ______?

The pattern involves a clockwise rotation of $90^{\circ }$ at each step:
1. North $\stackrel{+90^{\circ }\text{ CW}}{\to }$ East
2. East $\stackrel{+90^{\circ }\text{ CW}}{\to }$ South
3. South $\stackrel{+90^{\circ }\text{ CW}}{\to }$ West

Thus, the next diagram must feature an arrow pointing West.