For each of the following cases, indicate (a) what interest rate columns and (b) what number of periods you would refer to in looking up the present value factor. (1) In Table 3 (present value of 1): Number of Annual Rate Years Involved 9% 4 Case A Case B Case C Discounts per Year Annually Semiannually Semiannually 10% 12 8% 9 a (a) (b) Case A de % periods Case B % periods Case C % de periods (2) In Table 4 (present value of an annuity of 1): Number of Years Involved Number of Payments Involved Frequency of Payments Annual Rate Case A 10% 17 17 Annually Case B 8% 6 6 Annually Case C 8% 4 8 Semiannually (a) (b) Case A % periods Case B % periods Case C % periods