Solve the Problem $A = \left[ \begin{array} { r } 3 \\ - 5 \\ - 4 \end{array} \right]$

Multiple Choice

Solve the problem.
-Let $A = \left[ \begin{array} { r } 3 \\ - 5 \\ - 4 \end{array} \right]$ and $B = \left[ \begin{array} { r } - 5 \\ 6 \\ 5 \end{array} \right]$ . Find $A + B$ .

A)
$\left[\begin{array}{r}-2 \\1 \\1\end{array}\right]$

B)
$\left[ \begin{array} { l l l } - 2 & 1 & 1 \end{array} \right]$
C)
$\left[\begin{array}{rr}3 & -5 \\-5 & 6 \\-4 & 5\end{array}\right]$


D)
$\left[\begin{array}{l}2 \\1 \\2\end{array}\right]$