Emma sells motherboards for personal computers. For quantities up through 25, she charges $350 per board; for quantities between 26 and 50, she charges $315 for each board purchased beyond 25; and she charges $285 each for the additional quantities over 50. A large communication firm expects to require these motherboards for the next years at a rate of at least 140 per year. Order setup costs are $30, and holding costs are based on an 18 percent annual interest rate. What should be the best ordering quantity and what is the minimum average total cost per year? Requirements (1) This is an individual assignment. (2) Due date for this exercise is 06 October 2021