Express \[{{\left( -3 \right)}^{4}}\div {{n}^{4}}\] in the form\[{{\left( \frac{a}{b} \right)}^{n}}\].

• A. \[\frac{-24}{{{n}^{3}}}\]                           
• B.  \[{{\left( -\frac{3}{n} \right)}^{4}}\]
• C.  \[\frac{{{\left( -2 \right)}^{4}}}{{{n}^{4}}}\]                
• D. \[\left( \frac{-3}{n} \right)\times \left( \frac{-3}{n} \right)\]