Power notation of \[\frac{36}{81}\] can be written as

• A. \[\frac{{{6}^{2}}}{{{8}^{2}}}\]
• B. \[{{\left( \frac{2}{3} \right)}^{6}}\]
• C. \[\frac{6}{9}\]
• D. \[{{\left( \frac{6}{9} \right)}^{2}}\]