3) A stock produced annual returns of 42, -21, -12, 42, and 19 percent over the past five years, respectively. What is the geometric average return? Provide the answer as a %, accurate to at least 2 decimal places. 4) A portfolio had an original value of $10,000 when it was first formed. The current value of the portfolio is $12,862.50. The portfolio earned an average geometric return of 2.50% per year. How many years has it been since the portfolio was formed? A) 9.147 B) 12.148 C) 10.195 D) 11.216 E) It cannot be determined based on the information provided 5) Over the past four years, a corporate bond portfolio produced annual returns of 5.1, -7.8, 13.2, and 11.6 percent, respectively. Treasury bills produced returns of 2.4, 4.3, 3.1, and 3.0 percent, respectively over the same period. What is the standard deviation of the risk premium on this bond portfolio for this time period? A) 10.133% B) 9.549% C) 0.796% D) 102.68% E) None of the above