Which expressions are equivalent to $$(b^{2})^{\frac{1}{9}}$$

<div id="displayOption3" class="markdown-body editormd-html-preview"><textarea>None of the above
</textarea>None of the above
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<div id="id_cont_display" class="markdown-body editormd-html-preview"><textarea>Which expressions are equivalent to $$(b^{2})^{\frac{1}{9}}$$</textarea>Which expressions are equivalent to <math><semantics><mrow><mo>(</mo><msup><mi>b</mi><mrow><mn>2</mn></mrow></msup><msup><mo>)</mo><mrow><mfrac><mrow><mn>1</mn></mrow><mrow><mn>9</mn></mrow></mfrac></mrow></msup></mrow><annotation encoding="application/x-tex">(b^{2})^{\frac{1}{9}}</annotation></semantics></math>(b​2​​)​​9​​1​​​​
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