Two charges, $-2q$ and $+q,$ are fixed at the positions shown in the figure.

Along the line passing through these charges, on which of the three segments I, II$,$ and$/$or III could one place a third charge, $+q,$ such that it experiences no force at some point on that segment?

II

III

Not enough information

I and III

None

II and III

I

All

I and II