A charged particle is introduced at the origin x = 0, y = 0, z = 0...

A charged particle is introduced at the origin $x = 0, y = 0, z = 0$ with a given initial velocity $\overset{\to}{v}$ . A uniform electric field $\overset{\to}{E}$ and a uniform magnetic field $\overset{\to}{B}$ exist everywhere. The velocity $\overset{\to}{v}$ , electric field $\overset{\to}{E}$ and a uniform magnetic field $\overset{\to}{B}$ are given in the columns below

Column 1	Column 2	Column 3
1. Electron with \overset{\to}{v} = 2\dfrac{{E}_{0}}{{B}_{0}}\overset{^}{x}	(i) \overset{\to}{E} = {E}_{0}\overset{^}{z}	(P) \overset{\to}{B} = - {B}_{0}\overset{^}{x}
2. Electron with \overset{\to}{v} = 2\dfrac{{E}_{0}}{{B}_{0}}\overset{^}{y}	(ii) \overset{\to}{E} = - {E}_{0}\overset{^}{y}	(Q) \overset{\to}{B} = {B}_{0}\overset{^}{x}
3.Proton with $\overset{\to}{v}$ =0	(iii) \overset{\to}{E} = {- E}_{0}\overset{^}{x}	(R) \overset{\to}{B} = - {B}_{0}\overset{^}{y}
4. Proton with \overset{\to}{v} = 2\dfrac{{E}_{0}}{{B}_{0}}\overset{^}{x}	(iv) \overset{\to}{E} = {E}_{0}\overset{^}{x}	(S) \overset{\to}{B} = - {B}_{0}\overset{^}{z}

In which case would the particle move in a straight line along the negative direction of y axis