Find the Dot Product of the Vectors $\langle 1,2,3 \rangle$ And $\langle3,0 , - 7 \rangle$

Multiple Choice

Find the dot product of the vectors $\langle 1,2,3 \rangle$ and $\langle3,0 , - 7 \rangle$ .

A) -24
B) -21
C) -18
D) -16
E) 24
F) 21
G) 18
H) 16