If a $-6\mathrm{.}00$ C charge is placed at x $=0\mathrm{.}00$cm and a $-2\mathrm{.}00$ C is placed at x $=20\mathrm{.}0$ cm$,$ excluding $=+/-$ $,$ where could an electric field of zero exist?

Group of answer choices

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At locations: $0\mathrm{.}00$ cm $<$ x $<20\mathrm{.}0$ cm

At locations: x $>20\mathrm{.}0$ cm

At locations: x $<0\mathrm{.}00$ cm