If \(\left| {\overrightarrow A \times \overrightarrow B } \right| = \sqrt 3 \overrightarrow A \cdot \overrightarrow B \,\), then the value of \(\left| {\overrightarrow A + \overrightarrow B } \right| \,\) is
1
\({\left( {{A^2} + {B^2} + \frac{{AB}}{{\sqrt 3 }}} \right)^{1/2}}\,\)
2
A + B
3
\(\left( {{A^2} + {B^2} + \sqrt 3 AB} \right)^{1/2}\,\)
4
\({\left( {{A^2} + {B^2} + AB} \right)^{1/2}}\,\)