Divide and Simplify $\frac{3 x^{2}}{4} \div \frac{x^{3}}{16}$ A) $\frac{12}{x}$ B) $\frac{x}{12}$ C) $\frac{x^{5}}{21}$ D) $\frac{12 x^{2}}{x^{3}}$

Multiple Choice

Divide and simplify.
- $\frac{3 x^{2}}{4} \div \frac{x^{3}}{16}$

A) $\frac{12}{x}$
B) $\frac{x}{12}$
C) $\frac{x^{5}}{21}$
D) $\frac{12 x^{2}}{x^{3}}$