Multiply
- $\left(-9 x^{2}\right)\left(2 x^{3}\right)$ A) $11 x^{5}$ B) $11 x^{6}$ C) $-18 x^{6}$

Multiply.
- $\left(-9 x^{2}\right) \left(2 x^{3}\right)$

A) $11 x^{5}$
B) $11 x^{6}$
C) $-18 x^{6}$
D) $-18 x^{5}$