Chọn câu đúng \({\left( {\frac{2}{{ - 3}}} \right)^3} = \frac{8}{{ - 27}}\)

A. \({\left( { - \frac{7}{6}} \right)^2} = \frac{{ - 49}}{{36}}\)

B. \({\left( {\frac{2}{3}} \right)^3} = \frac{8}{9}\)

C. \({\left( {\frac{2}{{ - 3}}} \right)^3} = \frac{8}{{ - 27}}\)

D. \({\left( {\frac{{ - 2}}{3}} \right)^4} = \frac{{ - 16}}{{81}}\)