Find the Indicated Vector $\mathbf { u } = \left[ \begin{array} { r } 7 \\ - 1 \end{array} \right]$

Multiple Choice

Find the indicated vector.
-Let $\mathbf { u } = \left[ \begin{array} { r } 7 \\ - 1 \end{array} \right]$ . Find $- 6 \mathbf { u }$ .

A)
$\left[ \begin{array} { r } - 42 \\ - 6 \end{array} \right]$
B)
$\left[ \begin{array} { r } 42 \\ 6 \end{array} \right]$
C)
$\left[ \begin{array} { l } 42 \\ - 6 \end{array} \right]$
D)
$\left[ \begin{array} { r } - 42 \\ 6 \end{array} \right]$