\(\frac{x}{{\sqrt 3 }} + \sqrt 3 x = \sqrt 3 \)
A.\(S = \left\{ {\frac{3}{4}} \right\}.\)
B.\(S = \left\{ {\frac{4}{3}} \right\}.\)
C.\(S = \left\{ {\frac{3}{2}} \right\}.\)
D.\(S = \left\{ {\frac{2}{3}} \right\}.\)

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