Cynthia Korinsky,manager of a Large Medical Supply House That Operates

Cynthia Korinsky,manager of a large medical supply house that operates 50 weeks per year and 5 days per week,has decided to implement a periodic review system for all class A items.One such item has the following characteristics:
Demand = 10,000 units/year (or 40 units per workday)
Order cost = $50/order
Holding cost = $5/unit/year
If Korinsky wishes to minimize total cost (thereby approximating the EOQ) ,what should be P,the number of workdays between orders?

A) less than or equal to 10 days
B) greater than 10 days but less than or equal to 12 days
C) greater than 12 days but less than or equal to 14 days
D) greater than 14 days