Inventory carrying costs:

Select one:

a.are fixed regardless of the average size of the inventory.

b.include the costs of generating memos, fax transmissions, etc. associated with placing an order with a supplier.

c.are at maximum when a firm's order is equal to optimal quantity.

d.generally increase in proportion to the average amount of inventory held.

e.are equal to the sum of total inventory costs and total ordering costs.

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