A.\(x \in \left\{ {\dfrac{{20}}{3};\,\,\dfrac{{28}}{3}} \right\}\)
B.\(x \in \left\{ { - \dfrac{{20}}{3};\,\, - \dfrac{{28}}{3}} \right\}\)
C.\(x \in \left\{ {\dfrac{{20}}{3};\,\, - \dfrac{{28}}{3}} \right\}\)
D.\(x \in \left\{ { - \dfrac{{20}}{3};\,\,\dfrac{{28}}{3}} \right\}\)

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