Your portfolio has provided you with returns of 11.4 percent, 6.2 percent, - 7 percent, and 14.6 percent over the past four years, respectively. What is the geometric average return for this period? Seleccione una: a. 7.72 percent b. 7.55 percent c. 7.57 percent d. 7.25 percent e. 7.63 percent