Under MEL, when can a flight operate with a nonessential item inoperative?

Under MEL, when can a flight operate with a nonessential item inoperative?

• A. Only on international routes.
• B. When the item is categorized as nonessential and the aircraft is certified to fly with it inoperative and all necessary limits are met.
• C. Whenever the operator desires.
• D. Never.

Answer: (B)