Let ${\bf u}$ be a vector.

Select the best statement.

A. The vector $4 {\bf u}$ is longer than $-5 {\bf u}$ as long as ${\bf u}$ is nonzero.
B. The vector $4 {\bf u}$ could be longer or shorter than $-5 {\bf u}$, depending on the choice of ${\bf u}$.
C. The vector $4 {\bf u}$ is always shorter than $-5 {\bf u}$.
D. The vector $4 {\bf u}$ is shorter than $-5 {\bf u}$ as long as ${\bf u}$ is nonzero.
E. The vector $4 {\bf u}$ is always longer than $-5 {\bf u}$.
F. none of the above