A stock has returns of 18 percent, 11 percent, -21 percent, and 6 percent for the past four years. Based on this information, what is the 95 percent probability range of returns for any one given year? A. B. C. -13.56 to 20.56 percent -24.60 to 31.80 percent -30.62 to 37.62 percent -47.68 to 54.68 percent -71.73 to 71.73 percent D. E. folio beta