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