A firm practices a level strategy based on the next$$ year's quarterly demand. With an initial inventory level of$0,$ demand over the next four quarters is estimated to be $640,800,1,000,$ and$1,200.$ Inventory carrying cost equals $ $12$ per unit per quarter. Over the next$$ year, what will be the sum of inventory carrying$$ costs?

Part $2$

A$.$$ $43$ comma $680$

$ $43$ comma $680$

B$.$$ $11$ comma $280$

$ $11$ comma $280$

C$.$$ $4$ comma $560$

$ $4$ comma $560$

D$.$$ $0$

$ $0$

E$.$$ $10$ comma $920$

$ $10$ comma $920$