Three forces acting on a body are shown in the figure. To have the resultant force only along the y-direction, the magnitude of the minimum additional force needed is - <br>

Question

https://clay6.com/mpaimg/240_a.jpg

( A ) $\frac{\sqrt 3}{4} N$
( B ) $0.5 N$
( C ) $\sqrt3 N$
( D ) 1.5 N