Find the Dot Product for the Pair of Vectors $\langle 5 , - 13 \rangle , \langle 15,15 \rangle$

Find the dot product for the pair of vectors.
- $\langle 5 , - 13 \rangle , \langle 15,15 \rangle$

A) $- 195$
B) 270
C) $- 120$
D) 75