In an electrophilic substitution reaction of nitrobenzene, the presence of nitro group ________ ‘ (a) deactivates the ring by inductive effect (b) activates the ring by inductive effect (c) decreases the charge density at ortho- and para-positions of the ring relative to meta-position by resonance (d) increases the charge density at meta-position relative to the ortho and para-positions of the ring by resonance

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