11 of the following are the general principles underlying the valuation of liabilities except: a. Liabilities requiring the future delivery of goods or services appear at the estimated cost of those goods and services. b. Liabilities representing cash advances from customers appear at the amount of the cash advance. c. Liabilities requiring future cash payments appear at the present value of the required future cash flows discounted at an interest rate that reflects the uncertainty that the firm will be able to make the cash payments. d. The fair value of a liability cannot differ from the amount appearing on the balance sheet, particularly for long-term debt