What is the accumulated sun of each of the following streams of payments? a. (5 pts.) $520 a year for 10 years compounded annually at 11 percent b. (5 pls.) $104 a year for 7 years compounded annually at 7 percent c. (5 pts.) $35 a year for 12 years compounded annually at 13 percent d. (5 pts) \$24 a year for 5 years compounded annually at 4 percent