Which statement about impurities and reactivity hazards is true?

Which statement about impurities and reactivity hazards is true?

• A. Impurities can catalyze decomposition, alter kinetics, or change thermal properties, increasing risk.
• B. Impurities always reduce hazard.
• C. Impurities have no effect on reactivity hazards.
• D. Impurities can color the chemical but not affect safety.

Answer: (B)