The average annual demand for an item is normally distributed and equal to 2000 units, with a standard deviation of demand during the lead time of 6 units. The lead time for this item is a constant 5 days. Calculate the reorder point using a 90 percent in-stock probability (use your Z table) and assuming 365 days per year. Round off to the nearest whole unit.
a. 28 units
b. 35 units
c. 51 units
d. 43 units