Q15: Oz is approached by an overseas customer to fulfil a one-time-only special order for 1000 units. All cost relationships remain the same except for a one-time set-up charge of $15 000. No additional design, marketing or distribution costs will be incurred. What is the minimum acceptable bid per unit on this one-time-only special order? A. $92.50 B. $180.00 C. $53.75 D. None of the above is correct (Section B: 20 marks]