For a free body diagram shown in the figure, the four forces are applied in the ‘\( x \)’ and ‘\( y \)’ directions. What additional force must be applied and at what angle with positive \( x \)-axis so that the net acceleration of body is zero?
\( \sqrt{2} \, \text{N}, \ 45^\circ \)
\( \sqrt{2} \, \text{N}, \ 135^\circ \)
\( \dfrac{2}{\sqrt{3}} \, \text{N}, \ 30^\circ \)
\( 2 \, \text{N}, \ 45^\circ \)
