find the solution

40. A positive charge particle with charge q is moving with speed v in a region of uniform magnetic field B at the instant shown in figure. An external electric field is to be applied so that the charged particle follows a straight line path. The magnitude and direction of electric field required are respectively


$$\begin{gathered} \left(1\right) qvB, +y \mathrm{axis} \\ \left(2\right) qvB, -y \mathrm{axis} \\ \left(3\right) vB, -y \mathrm{axis} \\ \left(4\right) \frac{vB}{q}, -x \mathrm{axis} \end{gathered}$$