Find the Dot Product Of $\mathbf { u }$ And $\mathbf { v }$

Multiple Choice

Find the dot product of $\mathbf { u }$ and $\mathbf { v }$ .
$$\mathbf { u } = \langle - 8,7 , - 4 \rangle , \mathbf { v } = \langle 8,8,8 \rangle$$

A) $- 40$
B) 19
C) $\langle - 64,56 , - 32 \rangle$
D) 24
E) $\langle 0,15,4 \rangle$