please help asap

Manor is considering purchasing the subcomponents from an outside supplier, who normally charges $340 per unit. The supplier also has an 'Exchisive Buyer's Club" which costs $30,000 per month to join, but whose members can purchase the subcomponents for $290 per unit. Ficed overhead is not avoidable. How many units would Manor need to order per month to make it worth it to join the "Exclusive Buyer's Club"? Mutiple Choce 2.579 2.813 3,000 3,310