\(\left( {3x + \frac{1}{4}} \right) - \frac{1}{3}\left( {6x + \frac{9}{5}} \right) = 1\)
A.\(S = \left\{ {\frac{{13}}{{20}}} \right\}.\)
B.\(S = \left\{ { - \frac{{13}}{{20}}} \right\}.\)
C.\(S = \left\{ { - \frac{{27}}{{20}}} \right\}.\)
D.\(S = \left\{ {\frac{{27}}{{20}}} \right\}.\)