A.\(S = \left\{ { - 4\,;2} \right\}.\)
B.\(S = \left\{ { - 4\,; - 2} \right\}.\)
C.\(S = \left\{ {4\,; - 2} \right\}.\)
D.\(S = \left\{ {4\,;2} \right\}.\)