ou work at an electronics retailer and you$$re evaluating the inventory management of your monitors. On average, the electronics store sells about $35$ monitors each month. Each time you place an order for this monitor, you incur an order cost of $$20$ and the order typically takes $6$ days for an order to arrive.

The annual inventory carrying cost of the monitors is $20\%$ of the per unit purchase cost. Your store is open for $12$ months out of the year.

Your supplier has provided two options for how it could sell you this type of monitor:

Option A: if you order fewer than $350$ monitors when you place an order, each monitor costs $$120$

Option B: if you order $350$ or more monitors when you place an order, each monitor costs $$115$

Assume no variability in demand or lead time.