Evaluate the Expression $\text { Let } x = - 18 , y = - 1 \text {. Evaluate } | 7 y - 9 x | \text {. }$

Evaluate the expression.
- $\text { Let } x = - 18 , y = - 1 \text {. Evaluate } | 7 y - 9 x | \text {. }$

A) -169
B) -155
C) 169
D) 155