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 discount rate. (Round percentages to 1 decimal place, e.g. 15.1%.) (1) In Table 3 (future value of 1): Number of Discounts Annual Rate Years Involved per Year Case A 8% 7 Annually Case B 10% 15 Semianually Case C 10% 6 Semiannually (a) Case A % (b) periods Case B % periods Case C % periods (2) In Table 2 (future value of an annuity of 1): Number of Annual Rate Years Involved Number of Payments Involved Frequency of Payments Case A 8% 15 15 Annually Case B 8% 8 8 Annually Case C 6% 8 16 16 Semiannually (a) Case A % (b) periods Case B % do periods Case C % periods