Two uncharged metal spheres, #$1$ and #$2,$ are mounted on insulating support ro thild metal sphere, carrying a positive charge, is then placed near #$2.$ Now a copper wire is momentarily connected between #$1$ and #$2$ and then removed. Finally, sphere #$3$ is removed. In this final state

spheres #$1$ and #$2$ are still uncharged.

spheres #$1$ and #$2$ both carry positive charge.

sphere #$1$ carries positive charge and #$2$ carries negative charge.

spheres #$1$ and #$2$ both carry negative charge.

$24$

sphere #$1$ carries negative charge and #$2$ carries positive charge.