A charge $q$ is placed at $O$ in the cavity in a spherical uncharge $d$ conductor. Point $S$ is outside the conductor. If the charge is displaced from $O$ towards $S$ still remaining with in the cavity,

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  • A

    electric field at $S$ will increase

  • B

    electric field at $S$ will decrease

  • C

    electric field at $S$ will first increase and then decrease

  • D

    electric field at $S$ will not change

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