Let ${\bf u}_4$ be a linear combination of $\lbrace{{\bf u}_1, {\bf u}_2, {\bf u}_3 }\rbrace$.

Select the best statement.

A. $\lbrace{{\bf u}_1, {\bf u}_2, {\bf u}_3, {\bf u}_4}\rbrace$ could be a linearly dependent or linearly dependent set of vectors depending on the vector space chosen.
B. $\lbrace{{\bf u}_1, {\bf u}_2, {\bf u}_3, {\bf u}_4}\rbrace$ is a linearly dependent set of vectors unless one of $\lbrace{{\bf u}_1, {\bf u}_2, {\bf u}_3}\rbrace$ is the zero vector.
C. $\lbrace{{\bf u}_1, {\bf u}_2, {\bf u}_3, {\bf u}_4}\rbrace$ is never a linearly dependent set of vectors.
D. $\lbrace{{\bf u}_1, {\bf u}_2, {\bf u}_3, {\bf u}_4}\rbrace$ is always a linearly dependent set of vectors.
E. $\lbrace{{\bf u}_1, {\bf u}_2, {\bf u}_3, {\bf u}_4}\rbrace$ could be a linearly dependent or linearly dependent set of vectors depending on the vectors chosen.
F. none of the above