a. Explain the rationale for recognizing costs as expenses at the time of product sale. b. What is the rationale underlying the appropriateness of treating costs as expenses of a period instead of assigning the costs to an asset? Explain. c. In what general circumstances would it be appropriate to treat a cost as an asset instead of as an expense? Explain. d. Some expenses are assigned to specific accounting periods on the basis of systematic and rational allocation of asset cost. Explain the underlying rationale for recognizing expenses on the basis of systematic and rational allocation of asset cost. e. Identify the conditions under which it would be appropriate to treat a cost as a loss