21. Peter's indexed annuity uses a point-to-point index strategy, has a 100 percent participation rate, no cap rate, and a 2 percent spread. What interest rate would be used to credit interest on his annuity funds if the index closing level at the beginning of the index term period was 1000, and the level at the end of the period was 1200? a. 12 percent b. 20 percent Oc. 8 percent d. 18 percent