Multiply
- $\left(4 x^{2}-9 x\right)\left(4 x^{2}+9 x\right)$ A) $16 x^{4}-72 x^{3}-81 x^{2}$

Multiple Choice

Multiply.
- $\left(4 x^{2}-9 x\right) \left(4 x^{2}+9 x\right)$

A) $16 x^{4}-72 x^{3}-81 x^{2}$
B) $16 x^{4}+72 x^{3}-81 x^{2}$
C) $4 x^{4}-9 x^{2}$
D) $16 x^{4}-81 x^{2}$