The base edge of an oblique square pyramid is represented as [tex][tex]$x$[/tex] cm[/tex]. If the height is [tex][tex]$9$[/tex] cm[/tex], what is the volume of the pyramid in terms of [tex][tex]$x$[/tex]]?
A. [tex]3 x^2 \, \text{cm}^3[/tex]
B. [tex]9 x^2 \, \text{cm}^3[/tex]
C. [tex]3 x \, \text{cm}^3[/tex]
D. [tex]x \, \text{cm}^3[/tex]