According to the EOQ model, the sum of order costs and the carrying cost of the firm's inventory is equal to:
Select one:
a. financial costs and the marginal cost of the firm's inventory.
b. carrying costs and the marginal cost of the firm's inventory.
c. total cost of a firm's inventory.
d. order costs and the actual cost of the firm's inventory.
e. order costs and the marginal cost of the firm's inventory.