Explain how a nitro substituent on a benzene ring can facilitate a nucleophilic attack on the ortho and para positions.

• A. The nitro group stabilizes the negative charge by the inductive effect when the nucleophilic attack is at the ortho and para positions.
• B. The nitro group stabilizes the negative charge by resonance when the nucleophilic attack is at the ortho and para positions.
• C. The nitro group stabilizes the negative charge by steric hindrance when the nucleophilic attack is at the ortho and para positions.
• D. The nitro group stabilizes the negative charge by resonance when the nucleophilic attack is at the meta position.

Answer: (B)