Simplest form of \[{{\left( \frac{4}{9} \right)}^{3/2}}\]is

• A.  \[{{\left( \frac{9}{4} \right)}^{2/3}}\]  
• B.  \[\frac{8}{27}\]
• C.  \[\frac{27}{8}\]      
• D.  \[{{\left( \frac{8}{27} \right)}^{2}}\]