Evaluate the Determinant $\left| \begin{array} { r r r } 7 & - 3 & 9 \\ 0 & 5 & 1 \\ 0 & 0 & - 5 \end{array} \right|$

Multiple Choice

Evaluate the determinant.
- $\left| \begin{array} { r r r } 7 & - 3 & 9 \\ 0 & 5 & 1 \\ 0 & 0 & - 5 \end{array} \right|$

A) 175
B) $- 178$
C) $- 175$
D) 172