Arenediazonium salts are prepared from aromatic amines and used widely in synthesis. Which of the statements below are correct?

• Statement I: Benzenediazonium chloride is prepared from aniline with NaNO₂ and HCl at 273–278 K.
• Statement II: The arenediazonium ion is stabilised by resonance with the benzene ring.
• Statement III: Primary aliphatic amines form diazonium salts that are stable at room temperature.
• Statement IV: Benzenediazonium chloride is usually dried and stored as a solid for later use.