Annual demand is 7500, cost per order is $65/order, annual holding (carrying) cost per unit is $3/unit, the company works 300 days a year and lead time demand (m) is 6 working days. If the company finds after analyzing the behavior of lead time demand and found that it is not constant and shows variability that takes a normal distribution with a mean of 160 and a standard deviation of 8. If the company allows shortages 2 times a year. The approximate number of orders per year is:

Select one:

a. 8

b. 13

c. 12

d. Cannot be found

e. 10