Use Cramer's Rule to Solve the Linear System $$\left\{ \begin{aligned}8 x - 3 z & = 29 \\2 x + 9 y + 5 z & = 104 \\2 x - 9 y & = - 31\end{aligned} \right.$$

Multiple Choice

Use Cramer's rule to solve the linear system.
- $$\left\{ \begin{aligned}8 x - 3 z & = 29 \\2 x + 9 y + 5 z & = 104 \\2 x - 9 y & = - 31\end{aligned} \right.$$

A) $x = 8 , y = 3 , z = 9$
B) $x = 7 , y = 5 , z = 9$
C) $x = 7 , y = - 5 , z = - 9$
D) $x = 5 , y = 9 , z = 5$