Deflection of the Particle

A particle of mass m and charge q moves at a high speed along the x-axis.It is initially near x = -∞ and it ends up near x = +∞.

A second charge Q is fixed at the point x=0,y = -d.As the moving charge passes the stationary charge,its x component of velocity does not change appreciably,but it acquires a small velocity in y-direction.Determine the angle through which the moving charge is deflected.

(A)θ=tan^-1(qQ2πε₀dmv²)
(B)θ=sin^-1(qQ2πε₀dmv²)
(C)θ=tan^-1(qQ4πε₀dmv²)
θ=sin^-1(qQ4πε₀dmv²)