Myriah Fitzgibbon, of L.A. Plumbing, uses 1,200 of a certain spare part that costs $27 for each order, with an annual holding cost of $26. a) Calculate the total cost for order sizes of 25,40, 50,60, and 100 (round your responses to two decimal places). Order Size Total Cost (S) 1621.00 25 40 1330.00 50 1298.00 60 1320.00 100 1624.00 b) What is the economic order quantity? units (round your response to two decimal places