Sketch the vector field $\displaystyle \vec{F}(x,y) = - \frac{\vec{r}}{||\,\vec{r}\,||^3}$ in the plane, where $\vec{r} = \langle x, y \rangle .$ Select all that apply.

A. The vectors decrease in length as you move away from the origin.
B. All the vectors point toward the origin.
C. The vectors increase in length as you move away from the origin.
D. All the vectors point away from the origin.
E. The length of each vector is 1.