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-cenario 2: A supplier sells a popular auto part to car dealers. The weekly demand is approximately normal with the historical distribution of DN(63,25) units over a 45 -week operating year. The supplier pays $26 for each unit and sells each for $41. In addition, they estimate that the annual holding cost is 30 percent of the unit's cost. (to the supplier). It costs approximately $25 to place an order (managerial and clerical costs). Assume a four-week lead time. 10. Consider the distribution of the demand during lead time from question eight. What is the chance of the demand level during lead time exceeding 262 units? (a) 50 percent (b) 16 percent (c) 84 percent (d) 2.5 percent