Giải hệ phương trình:  \(\left\{ \begin{array}{l}8x - y = 6\\{x^2} - y = - 6\end{array} \right..\)

A \(S = \left\{ {\left( {6;\,\,42} \right)} \right\}.\)

B \(S = \left\{ {\left( {6;\,\,42} \right),\,\,\left( {2;\,\,10} \right)} \right\}.\)

C \(S = \left\{ {\left( {6;\,\,2} \right),\,\,\left( {2;\,\,10} \right)} \right\}.\)

D \(S = \left\{ {\left( {6;\,\,42} \right),\,\,\left( {12;\,\,10} \right)} \right\}.\)