Your portfolio has provided you with returns of $11\mathrm{.}4$ percent, $6\mathrm{.}8$ percent, $0\mathrm{.}7$ percent, and $14\mathrm{.}6$ percent over the past four years, respectively. What is the geometric average return for this period? A$.8\mathrm{.}25$ percentB. $7\mathrm{.}63$ percentC. $7\mathrm{.}55$ percent D$.7\mathrm{.}72$ percent E$.7\mathrm{.}87$ percent