Three coplanar forces acting on a particle are in equilibrium

Question :

Three coplanar forces acting on a particle are in equilibrium. The angle between the first and the
second is 60 degree and that between the second and the third is 150 degree then the ratio of the magnitudes of forces is

•  1:2 : sqrt{3}
• 1:3 : sqrt{3}
• 1:1 : sqrt{3}
• 2:1: sqrt{3}