Three spherical conductors, spheres A$,$ B$,$ and C$,$ were each suspended from a thread. The spheres had charges of $-200C,400C,$ and $-500C,$ respectively. Spheres B and C were brought into contact momentarily and then separated. The total charge of the system and the charge on each of the spheres after spheres B and C were brought into contact and separated were

Select one:

$-300C_1-200C_1-100C_1-100C$

$300C,200C,-50C_1-50C$

$-300C,-200C,400C,-500C$

$-300C_1-200C_1-50C_1-50C$