The figure shows collision between two masses M and 3M on a smooth horizontal surface Before the collision the mass M has a velocity $V_1$ in the y-direction. The mass 3 M has a velocity $(5/12)$ $V_0$ making an angle $\theta$ to the x-axis as shown. After the collision the mass 3 M comes to rest and the mass M moves along the x-axis with the velocity ${{\text{V}}_{\text{1}}}^{\text{'}}\left(\text{seefig}\left(\text{2}\right)\right)\text{. Then}$, neglecting gravity, (Given $\sin \theta =3/5$) choose the correct options.