Find the Value of the Determinant $\left| \begin{array} { r r r } 5 & - 5 & 8 \\ 0 & 9 & 9 \\ 0 & 0 & - 7 \end{array} \right|$

Multiple Choice

Find the value of the determinant.
- $\left| \begin{array} { r r r } 5 & - 5 & 8 \\ 0 & 9 & 9 \\ 0 & 0 & - 7 \end{array} \right|$

A) 315
B) 270
C) $- 315$
D) $- 360$