A.\({V_{\max }} = \dfrac{{8\sqrt 3 {R^3}}}{9}\)
B.\({V_{\max }} = \dfrac{{16\sqrt 3 {R^3}}}{{27}}\)
C.\({V_{\max }} = \dfrac{{8\sqrt 3 {R^3}}}{{27}}\)
D.\({V_{\max }} = \dfrac{{3\sqrt 3 {R^3}}}{8}\)

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