D. 9.5 percent E. 7.2 percent QUESTION 34 30 percent. Which of the following is the cos of preferied indid A. 12.2 percent B. 11.7 percent C. 10.5 percent D. 12.9 percent E. 10.7 percent D. 9.5 percent E. 7.2 percent QUESTION 34 30 percent. Which of the following is the cos of preferied indid A. 12.2 percent B. 11.7 percent C. 10.5 percent D. 12.9 percent E. 10.7 percent