A sum of $4000 is due for payment three years from now. You want to know how much this payment will be worth seven years from now if money is worth 9% p.a. compounded semi-annually, determine the equivalent value. Select one: O a. $ 5 588.40 O b. $ 5 888.40 O c. $ 5 788.40 O d. $ 5 988:40 O e. $ 5 688.40 A variable rate demand loan showed an initial balance of $20 000.00, payments of $5000.00 after six months, $10000.00 after one year, and a final payment after two years. Interest was 6% compounded semi-annually for the first year and 12% compounded monthly for the remaining time. You wish to calculate how much was the size of the final payment? Select one: O a. $6937.57 O b. $7237.57 O c. $6837.57 O d. $7137.57 e. $7037.57