Select all expressions that are equivalent to $\displaystyle \frac{3^n}{2^n}$. There may be more than one correct answer.

A. $\displaystyle \left( \frac{1}{ \frac{2}{3} } \right)^{n}$

B. $\displaystyle \left( \frac{2}{3} \right)^{-n}$

C. $\displaystyle \left( 1.5 \right)^{n}$

D. $\displaystyle \frac{2^{-n}}{3^{-n}}$

E. $\displaystyle \left( \frac{3}{2} \right)^{n}$

F. $\displaystyle -\left( \frac{3}{2} \right)^{n}$