$2.(5$ points$)$ Two particles travel through a region of space where the magnetic field is into the page, as shown in the figure. The electric charge of each particle is$,$

A$.1$ is positive, $2$ is neutral.

B$.1$ is negative, $2$ is neutral.

C$.1$ is positive, $2$ is positive.

D$.1$ is neutral, $2$ is negative.

E$.1$ is neutral, $2$ is positive.