An electron $($charge $=-1\mathrm{.}6{10}^{-19}C.$ is moving at $3\mathrm{.}0{10}^5\frac{m}{s}$ in the positive $x$ direction. A magnetic field of $0\mathrm{.}80$ T is in the positive $z$ direction. The magnetic force on the electron is:

ON

$4\mathrm{.}5{10}^{-14}N$ in the negative $z$ direction

$4\mathrm{.}5{10}^{-14}N$ in the positive $y$ direction

$4\mathrm{.}5{10}^{-14}N$ in the negative $y$ direction

$4\mathrm{.}5{10}^{-14}N$ in the positive $z$ direction