Two point charges, initially $2\mathrm{.}0$ cm apart, experience a $1\mathrm{.}0-$N force. If they are moved to a new separation of $8\mathrm{.}0$ cm$,$ what is the electric force between them?

Question $12$ options:

$4\mathrm{.}0$ N

$16$ N

$1/4$ N

$1/16$ N