Question 18 6 pts Determine the (modified) convexity of 3-year annuity-immediate with $100 level payments when the yield rate is 12%. 2.69 2.96 6.92 9.26 O 6.29 09.62 Question 19 3 pts Continued from the last question) Let Xl be the present price of the 3-year annuity-immediate at a yield rate of k%. Choose a correct statement. A) X11.9 X 12.0 > X 12.1 C) X 11.9 > X 12.0 X 12.1 E) None of the above OE B o o D Question 20 3 pts (Continued from the last question) Choose a correct statement. A) X, 19 +X121 X 120 C B